Valylene
缬烯炔, 2-甲基-1-丁烯-3-炔, 异戊稀炔
🗣️ 情景例句
Right.
对。
We need them urgently.
我们急需这些资料。
the mind catches hold of something and will not let it go.'
此时脑子纠缠住了某种东西又不肯松手。"