Sigma.
[医] 千分之一秒
🗣️ 情景例句
Thanks a lot.
多谢。
Beware of a silent dog and still water.
警惕无声之狗会咬人，平静之水会覆舟。
The only other ship to match her was the Thermopylae.
唯一可以与之一比高低的是“塞姆皮雷”号帆船。