Pentone
缬烯炔, 异戊烯炔
🗣️ 情景例句
I'm a senior here, so let me know if I can help you with anything.
我是大四的老生，有什么能帮忙的尽管说一声。
You have my word.
我保证。
I need your help.
我需要你的帮助。