piped-inCOCA⁸⁶³¹³Economist⁵³⁵⁸¹⁺¹ 基本例句 🌏中央系统 Ballroom dancing has long been considered a form of healthy exercise in China, with large groups gathering in parks or sports grounds to whirl away to piped-in music. 集体舞在中国被认为是一项健康运动，在公园和体育场都可以看到大量的人们随着音乐起舞。 tianya