beat的中文意思、音标与词形变化

n. 心跳(声), 打, 敲打声, 拍子 v. 打, 拍打, 打败 a. 疲乏的, 颓废的 beat的过去式 [计] 拍; 节拍

n. a regular route for a sentry or policeman n. a single pulsation of an oscillation produced by adding two waves of different frequencies; has a frequency equal to the difference between the two oscillations n. the sound of stroke or blow n. a regular rate of repetition