not able to occur, exist, or be done 不可能发生的,不可能存在的,不可能完成的 a seemingly impossible task. 一项看似不可能完成的任务。 [with infinitive]it was almost impossible to keep up with him. 要赶上他几乎是不可能的。 ■very difficult to deal with 很难处理的,为难的 she was in an impossible situation. 她处于为难的境地。 ■(informal)(of a person) very unreasonable (非正式)(人)无理的,不讲道理的 ‘Impossible woman!’ the doctor complained. "不讲道理的女人!"医生抱怨道。
语源
Middle English: from Old French, or from Latin impossibilis, from in- 'not' + possibilis (see possible)