Alkylene
亚烃基, 烯化, 烷撑
🗣️ 情景例句
OK, let's take a look.
好了， 让我们来看一看。
Though the fox run,the chicken hath wings.
狐狸虽会跑，小鸡有翅膀。
they aroused great interest at the time, they had important theoretical consequences,
这些观察在当时引起了人们极大的兴趣，具有重要的理论意义，