A sense of humour may work as a balancewheel in one's life.
幽默感可以在人的生活中起调节作用。
2
Changing needle Raise the needle by turning the balancewheel toward you and lower the presser foot.
更换缝纫机针朝你的方向摇动手轮，提升缝纫机针的高度。之后放下压布脚。
3
The balancewheel is the main part of a wrist watch. However, now its percent of pass is relatively low in our watch industry because of its small size and high precision.