onto/ˋɑntə; ˈɒntə; before vowels元音前读作 ˋɑntU; ˈɒntʊ; strong强读 ˋɑntu; ˈɒntuː/prep 1 used to say that someone or something moves to a position on a surface 到…上: The cat jumped onto the table. 猫跳到桌上。get onto a bus/plane/train (=get into it) 登上公共汽车/飞机/火车 Two girls got onto the bus. 有两个女孩上了公共汽车。2 be onto sbinformal to know who did something wrong or illegal【非正式】发现某人做了坏事[违法的事]: The police are onto him. 警察盯上他了。3 be onto sthinformal to have discovered or produced something important or interesting【非正式】发现[制作出]重要[有趣]的事物: He seems to be onto something with his latest ideas. 他最近的一些想法好像有点名堂。