Cinametic acid
[化] 桂美酸; 羟乙氧甲氧肉桂酸
🧩 词语组成解析
🗣️ 情景例句
This is fun.
很有意思。
Yes, I worked from early morning until late at night.
是,我从清早工作直到半夜。
Were you in San Francisco at the time of the big earthquake in 1989?
1989年旧金山大地震时，你在那儿吗？