重点讲解：
1. keep watch over 守护；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.
一名在现场维持秩序的文物考古工作人员表示，市文物考古研究所已派专人看守古墓r()2%,Gx%3E,U2qo。
2. interact with 相互作用；相互影响；
例句：These two chemicals interact with each other at a certain temperature to produce a substance which could cause an explosion.
这两种化学药品在一定温度下相互作用并产生一种引起爆炸的物质q~N38;r5HP7。
3. compare with 比较；对比；
例句：It will give you a "before" picture to compare with your new non-smoking self.
这次体检会为你提供一个与戒烟后的自己进行对比的依据_.7FS|]~dN。