| 释义 |
on·to AHD[ŏnʹto͞o”, -tə, ônʹ-] D.J.[ˈɒnˌtuː, -tə, ˈɔːn-]K.K.[ˈɑnˌtu, -tə, ˈɔn-]prep.（介词）- On top of; to a position on; upon:到…之上：在…顶端；在一位置上；在…上面：The dog jumped onto the chair.See Usage Note at on 这条狗跳到了椅子上面 参见 on
- Informal Fully aware of; informed about:【非正式用语】 知晓：非常熟悉；了解：The police are onto the robbers' plans.警察局都清楚抢劫犯的阴谋
adj.Mathematics（形容词）【数学】- Of, relating to, or being a mapping such that every element of the set referred to is the image of an element in another.映成的：一集合中的每一元素，经映象后为另一集合至少一元素的象的；与之有关的；或成为象的
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