Serumal tartar
[医] 牙根垢, 龈下垢, 血原性结石
🧩 词语组成解析
[医] 血清的
n. 酒石, 牙垢, 鞑靼人\\na. 鞑靼的
🗣️ 情景例句
sacrifices have to be made by one partner from time to time.
总要有一方必须不时做些牺牲。
I will be thy friend,but not thy vices' friend.
我愿意做你的朋友，但不做你那些恶习的朋友。
I didn't know she could swim. Who taught her?
我不知道她会游泳。谁教她的？