1. 发生冲突;打斗;争论;意见不合
    When people clash, they fight, argue, or disagree with each other.

    e.g. A group of 400 demonstrators clashed with police...
           400名示威者与警察发生了冲突。
    e.g. Behind the scenes, Parsons clashed with almost everyone on the show...
           在幕后，帕森斯几乎和剧组的所有人都发生过冲突。

2. (信仰、观点、特性)相互冲突，相互抵触，不相容
    Beliefs, ideas, or qualities that clash with each other are very different from each other and therefore are opposed.

    e.g. Don't make any policy decisions which clash with official company thinking...
           所作的任何决策都不要和公司官方理念相冲突。
    e.g. Here, morality and good sentiments clash headlong.
           在这个问题上，道德和良知互不相容。

3. (两件事)时间上冲突，撞期
    If one event clashes with another, the two events happen at the same time so that you cannot attend both of them.

    e.g. The detective changed his holiday dates when his flight was brought forward and it now clashed with the trial.
           由于航班提前，侦探更改了度假日期，但是这样一来就和审判冲突了。

4. (色彩或风格)不协调，不搭配
    If one colour or style clashes with another, the colours or styles look ugly together. You can also say that two colours or styles clash .

    e.g. The red door clashed with the soft, natural tones of the stone walls...
           红门和石墙柔和的自然色调不协调。
    e.g. So what if the colours clashed?
           那么，要是色彩不搭怎么办？

5. (体育用语中尤用来指热情高涨的比赛双方)交锋，交手，厮杀
    Sports journalists sometimes say that two individuals or teams who compete against each other clash, especially when a lot of feeling is involved.

    e.g. Lewis has recently recovered his fitness and will clash with Christie in the 4x100m relay...
           刘易斯近来恢复了状态，将在4×100米接力赛中和克里斯蒂一决雌雄。
    e.g. The two sides will clash there only if Chelsea beat Sunderland in their quarter-final replay.
           只有切尔西队在四分之一决赛的重赛中击败桑德兰队，双方才会交锋。

6. (金属相互碰撞)发出当啷当啷声，发出撞击声
    When metal objects clash, they make a lot of noise by being hit together.

    e.g. The golden bangles on her arms clashed and jingled.
           她手臂上的金手镯丁零当啷地响。