Polyalkylated
[化] 多烷基化的
🗣️ 情景例句
If it ain't broke, don't fix it.
东西还没坏，就别急去修它。
When was the last time he wrote you ?
他给你写最后一次是什么时候？
He wanted to buy a $300 watch for his wife,
他走进一家高级商店，要为妻子买一块价值300英镑的手表。