There are some fascinating add-ons that aren 't pianos .
软件里有些有意思的扩展组件，不是钢琴的。
After the event the pianos are donated to local schools and community groups .
活动后，钢琴将被捐献给当地的学校和社区团体。
The wire inside pianos has undergone significant changes between the piano 's origins in the early 1700s until the late 1880s .
从钢琴诞生的17世纪早期直到19世纪80年代，钢琴内部的琴丝经历了重大的改变。
But I think the annual sale of 300 pianos for a sole distributorship in canada is rather conservative .
不过我认为对加拿大的独家经销来说，年销售量300架钢琴未免太过保守了。
When wolfgang mozart sat down to perform his masterpieces to audiences , he tapped out the notes on a much different instrument than most pianos used today .
