我系好腰带，肩带，以及其它飞行要求的各项固定准备。
I hook up the lap belt, shoulder harnesses, and everything else.
外腰带或内带或是两者必须缝死于腰际，或是由至少穿过三个皮带环来固定住。
Either the BElt or the inner BElt or both must BE permanently fixed at the waist or fixed with a minimum of three BElt loops.
有时候，一些演奏者用一根腰带把乐器固定在身上，类似于演奏萨克斯样子，站着或行走着拉二胡。
Occasionally some musicians hold the instrument with the help of a rope, in the same way as for saxophone, in order to play standing or walking.
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