Watch out! Don't play with that thing.危险，别淘气

今天的几个句子是有关教诲、告诫的：1.I'm really sorry. 真对不起。2.Don't leave things half done. *也可用half done来表示“半途而废”。3.You can't be too careful. *直译“再小心也不为过”。4.You'll see.你终究会明白的。