Pneumeter
唿吸气量测定器
🗣️ 情景例句
When did you buy a house?
那你们在什么时候买房子呢?
Who rang the bell a while ago?
刚才谁在按门铃？
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。