But if the piano is hit hard----if it is beaten by a stiff, rigid equipment----its volume and carrying power will be impaired and its sound will become hard and hollow.

• 但是如果你狠狠地击打钢琴、如果你用坚硬的东西击打它,它的音量及传播能力就会消弱,而且它的声音还会变得生硬、不实。