Esters
[医]酯类
🗣️ 情景例句
My parents set aside a college savings fund for me.
我的父母为我存了一笔上学的费用。
I can't fasten this collar button.
我不能扣住这个领子钮扣。
She understood what I was talking about, even though it was the first time we had spoken together.
她理解我的话，虽然我们是第一次在一起说话。