欧洲音乐凑巧采用了八音音阶，“八度”一词就由此而来。European music happens to use a scale of eight notes, hence the use of the term octave.如果用竖琴演奏D音符，其他八度音阶所有相应的D弦都将发出共鸣。If the note of D is sounded on a harp, all the corresponding D strings of ot...
你的狗是公的,还是母的?Is your dog a he or a she?多可爱的小狗哇! 是公的还是母的?What a sweet puppy! Is it a he or a she?他变成了梁任公的带煽动性的文章的爱读者.He became a devoted reader of the agitational articles by Liang Chi - chao , who demanded constitutional ...