Ul
abbr. （美）保险商实验所（Underwriters' Laboratories）
🗣️ 情景例句
Hey, go to the doctor. That cough sounds bad.
嘿，去看看医生吧，听起来你咳嗽得挺厉害的。
He ate it in no time.
他一下子把它吃掉了。
Oh dear! It's very warm in this clasroom, isn't?
天哪，这屋里真暖和，不是吗？