Etymologic
a. 词源的, 词源学的
🗣️ 情景例句
Hello. What can I do for you?
你好。我能为你做点什么吗？
I asked him to clean it for me, but he wouldn't.
我请他帮我清理，但是他不肯。
Did you pay by check or cash?
你用支票还是现金？