Pentendioic acid
[化] 戊烯二酸
🧩 词语组成解析
🗣️ 情景例句
I cannot permit him his rudeness.
我不容许他无礼。
The more noble, the more humble.
越高尚，越谦虚。
It's a very old castle. It is the oldest one in Britain.
这个城堡很古老，它是英国最老的了。