Koc
[医] 阴极断电收缩
🗣️ 情景例句
He is tough in doing everything.
他不管做什么事都很有毅力。
I cannot be your friend and your flatterer too.
我不能既是你的朋友，而又对你阿谀奉承。
The development of such a telescope will be one of the great astronomical projects of the twenty-first century.
而开发这样一台望远镜将会是21世纪天文学的一个重要的研究课题。