When the ground on the piano, forward backward, met the ground level is not usual, don't too hard and avoid the piano bodytilt, jean wheel broken or damaged.
在平地推钢琴时，前进后退，遇到地面高低不平时，不要用力过猛，避免对琴体倾斜，琴轮折断或部件损坏。
2
Both types cause people to tilt their heads back, extend their arms from their body and try to look as large as possible.
这两种形式都使人们高昂头颅，舒展手臂，尽可能让自己看起来高大。
3
He explained how sitting on a wallet can cause the spine to become tilted, or for the body to compensate for the tilt.