check out phr v 1 [T check sth ↔ out] informal to make sure that something is true, correct, or acceptable 【非正式】 查证，核实: You should check out his story before you print it. 你应该在刊印之前核实他的说法。 2 [I] to pay the bill and leave a hotel 〔在旅馆〕办理退房手续，结账退房: We have to check out by 12 o'clock. 我们必须在十二点之前退房。 3 [T check sth ↔ out] especially AmE to borrow books from a library 【尤美】 〔从图书馆〕借出〔书〕