Ul
abbr. （美）保险商实验所（Underwriters' Laboratories）
🗣️ 情景例句
So I heard you're going to get married. Congratulations!
听说你快要结婚了，恭喜！
By the side of sickness health becomes sweet.
和疾病相比较，才显得健康的可贵。
In the contrary school, the duck is supreme.
与滑翔鸟相对的另一类鸟中，数野鸭本领最高。