下载掌阅APP，畅读海量书库
立即打开
n. 异常，反常
the condition of not being normal
v. 吸收
to take (something) in through or as through pores or interstices
n. 堆积，积聚
the act of gathering or amassing , as into a heap or pile
n. 气栽法
a technique for growing plants without soil or hydroponic media
adj. 高山生长的
living or growing on mountains above the timberline
n. 铝
a silvery-white, ductile metallic element , the most abundant in the earth’s crust but found only in combination
v. 积聚
to gather together for oneself, as for one’s pleasure or profit; accumulate
n. 花青素
any of various water-soluble pigments that impart to flowers and other plant parts colors
n. 途径
a way or means of reaching something; an access
n. 钙
a silvery, moderately. hard metallic element
adj. 特有的，典型的
being a feature that helps to distinguish a person or thing; distinctive
【近】 distinctive , peculiar , typical
n. 氯化物
a binary compound of chlorine
n. 叶绿素
any of a group of related green pigments
n. 缺绿病
the yellowing or whitening of normally green plant tissue
n. 钴
a hard, brittle metallic element , found associated with nickel, silver, lead, copper, and iron ores
n. 堆肥
a mixture of decaying organic matter , used to improve soil structure and provide nutrients
n. 复合物
a combination of two or more elements or parts
n. 浓度
the amount of a specified substance in a unit amount of another substance
v. 污染
to make impure or unclean by contact or mixture
【近】 pollute
n. 铜
a ductile metallic element that is an excellent conductor of heat and electricity
n. 耕作，耕种
the act of cultivating
adj. 不足的
inadequate in amount or degree; insufficient
【近】 insufficient , scarce , short
n. 消耗，用尽
the gradual use or consumption of a resource
n. 变色
the act of discoloring
adj. 基本的
fundamental or essential; basic
【近】 basic , elementary , essential , fundamental
n. 挖掘
the act or process of excavating
v. 展现
to show outwardly; display
v. 使容易，帮助
to make easy or easier
n. 温室
a structure, primarily of glass , in which temperature and humidity can be controlled
n. 草
a plant whose stem does not produce woody
adj. 草本的
relating to or characteristic of an herb as distinguished from a woody plant
【记】herb（ n. 药草，香草）
n. 水耕法，水栽培
cultivation of plants in nutrient solution rather than in soil
v. 实现，执行
to put into practical effect; carry out
n. 调查者，研究者
one, especially a detective , who investigates
n. 离子
an atom or a group of atoms that has acquired a net electric charge by gaining or losing one or more electrons
n. 铁
a silvery-white, malleable, ductile metallic element
adj. 隔离的
separated from others; solitary or singular
n. 铅
a soft, malleable, ductile metallic element
n. 豆荚
a pod that splits into two valves with the seeds attached to one edge of the valves
n. 锰
a gray-white or silvery brittle metallic element
n. 水银
a silvery-white poisonous metallic element , liquid at room temperature
adj. 微小的
basic or small-scale
n. 微量营养素
a substance , such as a vitamin, that is essential in minute amounts for the proper growth
n. 矿物
a naturally occurring, homogeneous inorganic solid substance
v. 喷洒
to moisturize (plants or dry air, for example) with a fine spray of water
v. 移动
to make mobile or capable of movement
n. 芥菜
any of various eurasian plants
n. 坏死
death of cells or tissue through injury or disease, especially in a localized area of the body
n. 镍
a silvery, hard, ductile, ferromagnetic metallic element
n. 硝酸盐
the univalent radical No 3 or a compound containing it
n. 营养物
a source of nourishment , especially a nourishing ingredient in a food
v. 省略
to pass over ; neglect
n. 过剩，过多
going or being beyond what is needed, desired, or appropriate; an excess
n. 小块土地
a small plot or piece of land
n. 病菌，病原体
an agent that causes disease, especially a living microorganism
n. 菥蓂
any of several plants , having small, flattened seed pods with margins
n. 叶柄
the stalk by which a leaf is attached to a stem
n. 磷
a highly reactive, poisonous, nonmetallic element
n. 植生整治，植物复育法
the use of plants to remove or neutralize contaminants , as in polluted soil or water
n. 染色，色素之形成
coloration of tissues by pigment
adj. 微红的
mixed or tinged with red; somewhat red
v. 重新安置
to move or be moved to a new place
n. 矫正，治疗
the act or process of correcting a fault or deficiency
n. 径流
rainfall not absorbed by soil
adj. 盐的
of, relating to, or containing salt; salty
n. 方案
an outline or a model of an expected or a supposed sequence of events
n. 硒
a nonmetallic element , red in powder form, black in vitreous form
adj. 蜿蜒的
of or resembling a serpent , as in form or movement; sinuous
【近】 meandrous , sinuous , tortuous , winding
n. 芽
a bud, young leaf , or other new growth on a plant
n. 灌木
a woody plant of relatively low height, having several stems arising from the base and lacking a single trunk; a bush
adv. 同时地
at the same time
adj. 细长的
having little width in proportion to height or length; long and thin
n. 熔炉
an apparatus for smelting
n. 钠
a soft, light, extremely malleable silver-white metallic element
n. 大戟
any of various plants , characteristically having milky juice and small unisexual flowers
v. 阻碍……的发育
to check the growth or development of
adj. 亚热带的
of, relating to, or being the geographic areas adjacent to the tropics
v. 吊，悬挂
to hang so as to allow free movement
【近】 dangle , depend
n. 症状
a characteristic sign or indication of the existence of something else
v. 忍受
to put up with; endure
【近】 bear , withstand
adj. 有毒的
of, relating to, or caused by a toxin or other poison
adj. 热带的
of, occurring in, or characteristic of the tropics
【近】 tropic
n. 种类
a group that is distinguished from other groups by a specific characteristic or set of characteristics
n. 叶脉
one of the vascular bundles or ribs that form the branching framework
adj. 木质的
marked by the presence of wood or xylem
n. 锌
a bluish-white, lustrous metallic element