Rapid calculation
[经] 速算
🧩 词语组成解析
rapid
['ræpɪd]
adj. 快速的;[摄]感光快的;险峻的;
n. 急流;高速交通工具，高速交通网;
rap-, rav- Rap,rapt,rav=snatch,表示”捕,夺”#词根助记：抢夺时速度必然很快
🗣️ 情景例句
She was still beautiful at the age of forty.
她活到四十岁仍然很美。
We'll leave some evenings free,that is,if it is all right with you.
如果你们愿意的话，我们想留几个晚上供你们自由支配。
I'm not sure how this works.
我不懂这是如何操作的。