Avoid squatting and kneeling during work . use long - handle mops or brooms to clean the floor so as to avoid having to bend the trunk and strain the spine 扫地抹地时，应尽量利用长柄工具，避免身驱俯前，以便维持腰背的正确弧度。
2.
Use long - handle mops or brooms to clean the floor so as to avoid having to bend the trunk and strain the spine . slightly bend the knees and tuck in your tummy before picking up heavy loads 扫地、抹地时，应尽量利用长柄工具，避免身驱俯前，以便维持腰背的正确弧度。
