Electrochronograph
n. 电动精密记时计
🗣️ 情景例句
I don't have time to take any elective classes.
我没有时间去上任何选修课。
One usually pricks up one's ears when his name is called.
人在被叫到自己的名字时，通常要侧耳倾听。
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。