The literature of a period reflects its values and tastes. 某一時期的文學可反映出該時期的價值觀念和審美觀念。
The magnitude of an earthquake is determined from the logarithm of the amplitude of waves recorded on a seismogram at a certain period. 地震級別是根據某一時期震動圖記錄的地震波振幅的對數值計算的。