Mercaptal
缩硫醛
🗣️ 情景例句
Six words.
有六个字。
It is one thing to speak much and another to speak pertinently.
话讲得多是一回事，讲得恰当是另一回事。
Audiences in the second decade of the twentieth century found it pleasant to escape to a time when life, though hard, was relatively simple.We still do;
生活在20世纪20年代的观众认为，逃到一个即使艰苦但比较简朴的时代中去是件愉快的事，我们今天仍有这种感觉。