Stel
abbr. 短时间接触容许浓度（Short term exposure limit）
🗣️ 情景例句
His actions express his love more than any words could do.
他用行动表示的爱胜过任何言语。
Yes, and I hope we can have some snow this winter.
是的，我希望今年冬天会下雪。
No, it's too small. Let's go to the farthest instead. It's more interesting.
不，那个太小了。还是去最远的那个吧。那更有趣！