Hexandial
己二醛
🗣️ 情景例句
She's on a diet these days.
这些天她在节食。
Do you often study history on Saturday?
你常常在星期六学历史吗？
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。