Pentaiodoethane
[化] 五碘乙烷
🗣️ 情景例句
Sure. I will. You can count on that.
我一定会。
It is easy to open a shop but hard to keep it always open.
开设店铺易，维持常开难。
of a change of atmosphere, of a diversion of effort, is essential.
改变一下气氛，转移一下注意力，这是不可缺少的。