所有的这些因素产生不同种类的琴丝，特别是当钢被用作制造琴丝时。
All of these factors create different types of wires, especially when steel is used.
当安保人员向于富琴夫妇询问时间过程时，于富琴的丈夫却说：“不要浪费警力，我们是有身份的人。”
When the couple was questioned about the issue by security staff, the husband said: "We are of high-level positions. So don't bother to call the police."
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。
When the ground on the piano, forward backward, met the ground level is not usual, don't too hard and avoid the piano body tilt, jean wheel broken or damaged.
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