Day 18
"To be on top of sth" : an idiom that means "to be in control of a situation" or "to be fully informed about something."
It's frequently used to assure someone that a problem or task is under control and is being dealt with appropriately.
“To be on top of sth”是个习语,意思是“控制某种局面”或“充分了解某物”。它经常用来向某人保证某个问题或任务处于掌控之下,并且得到了恰当的处理。
Don't worry. We've been on top of the problem.
别担心,我们正在处理这个问题。
If we don't get on top of the whole global warming issue, the consequences will be catastrophic.
如果我们不能完全掌控全球变暖问题,后果将是灾难性的