Allenic compound
[机] 丙二烯系化合物
🧩 词语组成解析
🗣️ 情景例句
I never want to see you again.
我再也不想见你了。
We can't recall how often he's written.
我们记不起来他每隔多久写一封信。
and if a single curved glass would distort nature, how much more would a pair of them?
何况一片曲面镜就可歪曲自然，那么伽利略的两片曲面镜对自然的歪曲又该多大呢？