Pentenedioic acid
[化] 戊烯二酸
🧩 词语组成解析
🗣️ 情景例句
Sounds like ...
声音像……
How long will ti take you to finish the work?
你要花多长时间才能完成那项工作？
I haven't seen him for five years.
我五年没有见到他了。