Phenylchinaldine
[化] 苯基甲基喹啉
🗣️ 情景例句
This is fun. It's a piece of cake.
有意思 毫不费力。
In all things, it is better to hope than to despair.
凡事抱希望为佳，不应悲观而失望。
These days, it is differences in national regulations, far more than tariffs, that put sand in the wheels of trade between rich countries.
当前，是各国管理条例上的差异，而不是关税阻碍了发达国家之间的贸易。