Ul
abbr. （美）保险商实验所（Underwriters' Laboratories）
🗣️ 情景例句
The book impressed a lot of people.
那本书在很多人心中留下深刻印象。
As you all know, doing business is not an easy thing to do.
大家都知道，做生意并不是一件容易的事。
Where are you staying in Guangzhou? I hear that the hotels there are very expensive.
在广州你打算住在哪儿？我听说那里的旅馆收费很高。