Sigma.
[医] 千分之一秒
🗣️ 情景例句
You may be the next Ansel Adams and not even know it.
你或许是第二个Ansel Adams而不自知呢。
Keep your fingers crossed.
为成功祈祷吧。
We must carry her to the side of the road.
我们必须把她抬到路边。