Heptasulfide
七硫化物
🗣️ 情景例句
Payment by instalments is one of the terms of payment that has been accepted.
分期付款是通常被接受的一种付款方式。
I'd like to explain what makes this factory special.
我要向你说明本工厂的特性。
In the afternoon, classes are over at 3:30, and I get home at about 4:00.
下午三点半下课，我大概四点到家。