Several steps led up to the first floor and stairwell; they were wide at the bottom, narrower above, set between walls topped with iron banisters and curving outwards at street level.
几个台阶通向一楼和楼梯井;它们底部宽,上面窄,铁扶手镶嵌到墙里面,朝外弯曲,跟街道持平。
With the tom set up vertically, sound waves hit the floor and bounce back into the bottom head. Angling a tom slightly causes sound waves to scatter, and diffuses them.
这个直接向着地板去的声波将被反弹上来并且会对 底面鼓皮的震动造成相消或加重某些频率的影响。
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