Sleeper agent
潜伏特工
🧩 词语组成解析
sleeper
['sli:pə]
n. 卧车;轨枕;睡觉（呈某种状态）的人;冬眠动物;
🗣️ 情景例句
Service like this deserves a really good tip.
这样的服务值得拿优厚的小费。
I forgot what I was gonna say.
我忘了要说什么了。
The Hubble telescope was launched into space by NASA on April 20,1990 at a cost of over a billion dollars.
哈勃望远镜于1990年4月20日由国家航空航天局发射升空，耗资10多亿美元。