Stellasterol
[化] 星鱼甾醇
🗣️ 情景例句
You have been working on this for some time, Richard.
你从事这工作已有一段时间了， Richard。
How long?
多长？
I said I would be at your house at six o'clock, but the boss want me to do some extra work.
我说过我6点到你家，但老板要我加班。