Isobutene
[化] 异丁烯
🗣️ 情景例句
Now, no more stalling.
现在，不用再拖延了。
Catch me later.
过会儿再来找我。
Once the oxygen content of the air had risen to 25% it was ready to burn.
一旦氧气在空气中的含量达到25%，它就要燃烧。