Polythiourea
聚硫脲
🗣️ 情景例句
How about cleaning up a bit around here?
你是不是该把这儿收拾一下？
He who never was sick dics the first.
永不生病的人往往一病致命。
I'd like to do some shopping, but not during the day.
我愿意买些东西，但不必白天去。