S.t.u.
[医] 皮肤试验单位
🗣️ 情景例句
When will she come back?
她什么时候会回来？
Why are you crying?
你为什么哭？
The winning car reached a speed of forty miles an hour -- much faster than any of its rivals.
获胜的那辆车达到了时速40英里--远远超过任何对手。