Trimethylene diamine
[化] 亚丙基二胺; 1,3-丙二胺
🧩 词语组成解析
[化] 环丙烷\\n[医] 三甲烯, 环丙烷
diamine
[['daiəmi:n]]
[化] 二元胺\\n[医] 二胺; 胼, 联胺
🗣️ 情景例句
and a book of photos about the United States still feels right.
而一本关于美国的摄影集仍然很有前景。
They jumped at the unexpected noise.
他们因突如其来的声音吓得跳了起来。
About once a month. Not too often, because neither of us has much time. We both have too much work to do.
大约每月一次。不太经常写信，因为我俩的时间都很紧。我们都有做不完的事。