重点讲解：
1. over the top
夸张的；言过其实的；
eg. The special effects are a bit over the top but I enjoyed it.
特效有点夸张，但是我喜欢。
eg. Judy's behaviour was over the top at the party last night.
朱迪在昨晚聚会上的行为太过份了。
2. check on
检查，查看（以确保一切正常） ；
eg. Stephen checked on her several times during the night...
斯蒂芬夜里起来看了她好几遍。
eg. He decided to check on things at the warehouse.
他决定去仓库查看一下。
3. keep track
跟上…的进展；掌握…的最新消息；
eg. I couldn't keep track any longer of what was owed.
最后我再也弄不清欠款的确切总数了。
eg. That means programmers have to keep track or recompute how much space is left all the time.
这意味着程序员必须始终跟踪或重新计算剩余的空间。