Geomagnetometer
地磁仪
🗣️ 情景例句
It's inevitable that he'll find out about it.
他无可避免地会发觉此事。
Yes, I do.
是的，我有。
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。