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...
她抓住扶手以保持平衡。She was holding onto the rail to keep her balance.他紧握椅子扶手的手逐渐松开了。He gradually relaxed his grip on the arms of the chair.一名守卫用警棍敲打金属扶手。A guard raps his stick on a metal hand rail....
Objective : To probe into the effective method to cure the hypertrophic pharyngitis.目的: 探讨治疗慢性肥厚性咽炎的有效方法.There are two commonly clinical types of excessive scaring , hypertrophic and keloid scar.增生性瘢痕和瘢痕疙瘩是临床上常见的病理性瘢痕.Pa...