used to describe the highest level of sth 最高的◆Property prices have reached peak levels. 房地产价格已经达到最高水平。◆The machinery needs regular maintenance to operate at peak efficiency. 这些机械需要定期维护才能以最高效率运转。◆She believed that a good night's sleep was the secret of peak performance. 她相信取得最好成绩的秘诀在於一夜好觉。⨁a peak level / rate / value 最高水平／速度／价值⨁peak efficiency / performance 最高效率／业绩
of a time when the greatest number of people are doing sth or using sth, and prices are often higher 旺季的；高峰的◆July and August are the peak season for travel in Europe. 七月和八月是欧洲的旅游旺季。◆Phone calls are more expensive during peak times. 高峰时段电话费要贵些。➡off-peak ⨁a peak period / season / time 高峰时段；旺季；高峰期