Ul
abbr. （美）保险商实验所（Underwriters' Laboratories）
🗣️ 情景例句
and I'm giving some thought to a new book on a different subject.
如今我又开始在构想另一本不同题材的新书。
He has majored in biology.
他专供生物学。
When he died at the age of eighty,
他80岁那年死去时，