1. 顶点；顶峰
    The peak of a process or an activity is the point at which it is at its strongest, most successful, or most fully developed.

    e.g. The party's membership has fallen from a peak of fifty-thousand after the Second World War...
           二战后该党党员人数已从5万人的峰值下降了。
    e.g. The bomb went off in a concrete dustbin at the peak of the morning rush hour.
           在最繁忙的交通早高峰期，那枚炸弹在一个混凝土垃圾箱里爆炸了。

2. 达到顶点；达到顶峰；达到最高值
    When something peaks, it reaches its highest value or its highest level.

peak

    e.g. Temperatures have peaked at over thirty degrees Celsius...
           温度最高达30摄氏度以上。
    e.g. The crisis peaked in July 1974...
           那场危机在1974年7月达到巅峰。

3. （水平、价值）最高的，最大的
    The peak level or value of something is its highest level or value.

    e.g. Calls cost 36p (cheap rate) and 48p (peak rate) per minute...
           电话每分钟36便士（优惠费率）和48便士（高峰费率）。
    e.g. We bought it at the wrong time and paid the peak price.
           我们买的时机不合适，买了个最高价。

4. 高峰的；高峰期的
    Peak times are the times when there is most demand for something or most use of something.

    e.g. It's always crowded at peak times...
           高峰期总是非常拥挤。
    e.g. During peak periods, reservations are difficult to make at some of the hotels.
           在高峰时期，有些酒店很难预订到房间。

5. 山峰；山顶；山巅
    A peak is a mountain or the top of a mountain.

peak什么意思

    e.g. ...the snow-covered peaks.
           积雪覆盖的山顶

6. 帽舌；帽檐
    The peak of a cap is the part at the front that sticks out above your eyes.

    e.g. The man touched the peak of his cap.
           那名男子摸了摸他的帽舌。