cover [ ˈkʌvə(r) ] v. 覆盖、掩盖 n. 覆盖物、躲避处

1. cover for... 代替……、替……掩护

2. cover up 掩盖、盖住

3. under cover 秘密地、暗地里

discover / find 都有“发现”的意思。

discover 指首次发现从前没有被发现的东西。

find 指丢失的东西被找到了。

· It was Columbus who discovered America.

是哥伦布发现了美洲。

· I looked for my pen everywhere and found it in my bag at last.

我到处找我的笔，最后在我的包里找到了它。

Q The ground is ______ with deep snow.

1. covered 2. filled 3. decorated