Sigmate
a. Σ形的, S形的
🗣️ 情景例句
There's nothing you can do about it.
你对此无能为力。
I used to start working at 9:00 o'clock every day.
我过去常在9:00点钟开始每天工作。
What's it like in summer?
夏季的天气如何呢？