1. ______________________________关心/担心…… 2.________________密切注视 3.________________(动物)以……为食 4. go for ________________ 5. on the brink of`_____________________________
be concerned for/about...
keep an eye on
feed on
袭击,向……进攻
在……边缘;濒临……
Ⅱ.短语天地