Alkanethiols
烷硫醇
??? 情景例句
I'll try to explain.
我會(huì)盡量給你解釋。
Which one do you want?
你要哪一個(gè)？
There is a new type of machine which can produce colour copies.
有一種新型的機(jī)器能夠制作出彩色復(fù)印件。