Alkylable
[机] 可烷基化的
🗣️ 情景例句
And tell me where you are and what's happened.
告诉我你在哪里，发生了什么事？
I'll have studied English for four years next March.
到明年三月，我就学了四年的英语了。[将来完成时，表示将完成…，会做完…]
Excuse me. Are the hourse-drawn streetcars free?
对不起，这些马车是免费乘坐的吗？