赫兹hè zī
hertz (Hz); periods per second; cycles per second; cycle
纪jì
age; period; epoch
季jì
season; period; qtr
原声例句
2014 English Cafe
Each game is divided up into four periods of 12 minutes each.
每场比赛分为四节,每节 12 分钟。
2011 ESLPod
Erin begins by saying to Sean, " Smell that! " Sean says, " Smell what? " Erin says, " Can't you smell the changing of the seasons? " The " seasons" are the four periods of the year: summer, spring, fall, and winter.