Mastichic acid
[医] 熏陆香脂酸
🧩 词语组成解析
🗣️ 情景例句
It's a problem, isn't it?
这确实是个问题，不是吗？
He always comes rushing up at the last moment.
他往往到最后的一瞬间才急忙赶来。
Suddenly someone shouted.'It's two minutes past twelve! The clock has stopped!'
“已经12点零2分了！那钟已经停了！”