Stel
abbr. 短时间接触容许浓度（Short term exposure limit）
🗣️ 情景例句
A kind of a fifty-year anniversary reunion.
等于是五十周年重逢聚会。
He that will thrive must rise at five.
五更起床，百事兴旺。
I was being tested for a driving licence for the third time.
我第3次接受驾驶执照考试。