Sst
abbr. 超音速运输机（supersonic transport）
🗣️ 情景例句
I got lost for two days and I couldn't find anyone who could understand me.
我已经迷路两天了，找不到一个人可以听懂我的话。
Have you been busy with schoolwork?
学校的功课很忙吗？
That's the ship we travelled on.
这是我们所乘的那条船。