Cyc
abbr. 环已酮；成本均线
🗣️ 情景例句
I don't know what I would do without you.
我真不知道没有你们我怎么办。
I asked him to fix it for me, but he wouldn't.
我请他帮我修理，但是他不肯。
It's four o'clock.
四点了。