Pentenyl
戊烯基, 2-戊烯基
🗣️ 情景例句
Lacks confidence and poise is nervous and ill at ease.
信心不足，不够自信，精神紧张，心神不定。
I hope you can like the picnic.
我希望你能喜欢这野餐。
That's right. And the air today is nice and clean.
对。今天空气很清新。