Chloroallocinnamic acid
[建] 氯别肉桂酸
🧩 词语组成解析
🗣️ 情景例句
he could be so valuable.
他或许能够有所用。
Neck and neck.
不分上下。
They are often more industrious, useful citizens than those who are never late.
他们与那些从不迟到的人相比，常常是更勤奋有用的公民。