形容词给人印象不深的，不很好的

1. 无印象的：unimpressible 不可印的 | unimpressive 无印象的 | unimproved 未加改良的

2. 给人印象不深的：647. unimaginable 不可想象的 | 648. unimpressive 给人印象不深的 | 649. uninformed 信息不足的

3. 印象淡薄的：unimpressive 无印象的 | unimpressive 印象淡薄的 | unimproved 未加改善的

4. 无印象的/印象淡薄的：unimpressed /无印记的/ | unimpressive /无印象的/印象淡薄的/ | unimproved /未加改善的/未垦的/

1. 给人印象不深的；平常的；不起眼的
    If you describe someone or something as unimpressive, you mean they appear very ordinary, without any special or exciting qualities.

    e.g. ...even though Manchester United have looked unimpressive over recent weeks...
           尽管曼彻斯特联队在近几周表现平平
    e.g. Rainey was an unimpressive, rather dull lecturer.
           雷尼是个平庸而且相当乏味的老师。

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adj

1. not capable of impressing