Refracta dosi
[医] 重复分剂量, 分数[剂]量
🗣️ 情景例句
How I envy you.
我真是羡慕你。
Can I have a second-class one way ticket to Chicago,please?
请给我一张去芝加哥的单程二等票好吗？
He had been there for nearly ten hours.
他已经在烟囱里被困了将近10个小时。