Pentacite
季戊(四醇)醇酸树脂
🗣️ 情景例句
I work part time in the summer to pay for my tuition.
我夏天做兼职来支付学费。
Excuse me for bothering you.
打扰了！
What are you doing to do now,George?
你现在打算干什么，乔治？