Acceleration principle
[经] 加速理论
🧩 词语组成解析
🗣️ 情景例句
She says
她也谈起
The dogs bark, but the caravan goes on.
我行我素，岂管他哉。
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。