Pentabromoethane
五溴乙烷
🗣️ 情景例句
Thank you very much.
非常感谢。
Does it make any difference to you whether we have our lesson at two o'clock or at three o'clock?
我们在两点上课还是在三点上课，你觉得有关系吗？
I don't think there are. But there are more men than women scientists. And more men than women are heads of companies.
我想没有。但是，男科学家比女科学家多。而且，各公司的负责人中，男人要比女人多。