Stel
abbr. 短时间接触容许浓度（Short term exposure limit）
🗣️ 情景例句
Sports help to develop healthy bodies.
运动可以锻炼健康的身体。
At what time can we work out a deal?
我们什么时候洽谈生意？
I'm changing my hotel. I'll drop in and leave the new address.
我就要换一家旅馆了。我会顺便再来一趟，把新地址留下来的。