Levulinate
乙酰丙酸
🗣️ 情景例句
but just right for us.
但正好够我们住。
Please come here.
请来这里。
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。