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...
Mauna Loa awoke from a 25 year silence in July 1975, filling its summit - pit crater with lava.莫纳罗亚火山在1975年7月又从沉睡了25年的状态下苏醒过来了, 山顶上的火山口充满了熔岩.They climbed up the mountain and reached the summit.他们爬山, 最终达到了山顶。The blizzard ...
He laughs loudly when I accuse him of fibbing.当我指责他说谎时，他大笑起来。Life at high school wasn't a bundle of laughs, either.中学生活也不是充满欢笑。She laughs too much.她笑得太多了。...