单词	peak
释义	noun | adjective | verb peakpeak1 /pik/ ●●○ noun [countable] Etymology ETYMOLOGYpeak1 Origin: 1500-1600 Perhaps from pike mountain, hill (13-21 centuries), probably from a Scandinavian language Collocations COLLOCATIONS► down from its peak  Oil production is down from its peak several years ago. ► at the peak of  He is at the peak of his career. ► past ... peak  As a tennis player, she’s past her peak. ► reach/hit a peak  The city’s population reached its peak a decade ago. 1 [usually singular] the time or point at which something is biggest, most successful, or best:  Oil production is down from its peak several years ago. He is at the peak of his career. As a tennis player, she’s past her peak.reach/hit a peak The city’s population reached its peak a decade ago.2the sharply pointed top of a mountain, or the whole mountain:  the Alps’ snow-covered peaks → see also summit3a part that forms a point above a surface or at the top of something:  Whisk the egg whites until they form stiff peaks. → see also widow's peak noun | adjective | verb peakpeak2 ●●○ adjective Collocations COLLOCATIONS► peak level/rate/value etc.  Gasoline prices are 14% below the peak level they hit in November. ► peak hours  Traffic increases during peak hours. 1used to talk about the best, highest, or greatest level or amount of something:  athletes who are in peak conditionpeak level/rate/value etc. Gasoline prices are 14% below the peak level they hit in November.2a peak time or period is when the largest number of people are doing the same thing, using the same service, etc.:  Traffic increases during peak hours. → see also off-peak noun | adjective | verb peakpeak3 ●○○ verb [intransitive] Verb Table VERB TABLE peak Simple Form Present I, you, we, they peak he, she, it peaks Past I, you, he, she, it, we, they peaked Present perfect I, you, we, they have peaked he, she, it has peaked Past perfect I, you, he, she, it, we, they had peaked Future I, you, he, she, it, we, they will peak Future perfect I, you, he, she, it, we, they will have peaked Continuous Form Present I am peaking he, she, it is peaking you, we, they are peaking Past I, he, she, it was peaking you, we, they were peaking Present perfect I, you, we, they have been peaking he, she, it has been peaking Past perfect I, you, he, she, it, we, they had been peaking Future I, you, he, she, it, we, they will be peaking Future perfect I, you, he, she, it, we, they will have been peaking to reach the highest point or level:  Sales peaked in August, then fell sharply.peak at Wind speeds peaked at 105 mph yesterday.
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