重點講解：
1. keep watch over 守護；密切注意；
例句：A personnel at the archaeological site introduced that some designated personnel has been sent to keep watch over the tomb.
一名在現場維持秩序的文物考古工作人員表示，市文物考古研究所已派專人看守古墓r()2%,Gx%3E,U2qo。
2. interact with 相互作用；相互影響；
例句：These two chemicals interact with each other at a certain temperature to produce a substance which could cause an explosion.
這兩種化學藥品在一定溫度下相互作用并產生一種引起爆炸的物質q~N38;r5HP7。
3. compare with 比較；對比；
例句：It will give you a "before" picture to compare with your new non-smoking self.
這次體檢會為你提供一個與戒煙后的自己進行對比的依據_.7FS|]~dN。