動詞 peak:

1. to reach the highest point; attain maximum intensity, activity
   同義詞：peak

1. The mountain peaks are covered with snow all year.
   山頂上終年積雪。
2. We have a precipitous climb to the peak.
   我們向著陡峭山頂攀登。
3. Tourism is at its peak in August.
   旅游業(yè)在八月份達到高峰。
4. The business cycle is a series of peaks and troughs.
   商業(yè)周期就是淡旺期交替。