Exocycloida
外环形棘皮目
🗣️ 情景例句
What is it?
是什么主意？
Is this toothpaste on sale today?
这支牙膏今天是削价出售的吗？
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。