Ul
abbr. （美）保险商实验所（Underwriters' Laboratories）
🗣️ 情景例句
Can you cash this check for me?
你能替我兑现这张支票吗？
How did this happen?
怎么会这样？
Busmen have decided to go on strike next week.
公共汽车司机决定下星期罢工。