Eucasin
[医] 酪蛋白铵
🗣️ 情景例句
He's not as lucky as I am
他不像我这样幸运地
Knowledge advances by steps and not by leaps.
知识只能循序渐进，不能跃进。
One third of this area is covered with forest.
这一地区三分之一的地方都是森林。