S.i.
[医] 可溶胰岛素, 国际单位制
🗣️ 情景例句
How do you spell it?
如何拼写？
Sorry to bother you, but do you have change for a one?
对不起，麻烦你，你有1元钱的零钱吗？
It was like being on a boat.
就好像是坐在一条小船上一样。