Methaldehyde
四聚乙醛
🗣️ 情景例句
I hope he's in a good mood.
我希望他心情不错。
There's no sense in going by boat when the plane is just as cheap and much quicker.
既然乘飞机和坐船一样便宜而且还快得多，那么就没有理由去坐船。
if given the chance to live long enough;
即使能让它们活得足够长久的话，