求翻译：拉杆箱几乎成了差旅必备的储物装备，对比背包而言可以减少重物对肩部和脊柱部分的压迫，然后一旦携带的东西过多对手臂力量的要求也是蛮大的。从拉杆箱使用者的切身体会出发，在原有的四轮基础上增加了一个辅助轮可以对整个箱体起到一定的支撑作用同时减少对手臂的拉扯，而箱体正面的小挂钩呢还可以用啦挂放手提袋之类的东西是什么意思？

Trolley travel has become almost essential storage equipment , in terms of contrast backpack can reduce the weight on the shoulders and spine section of oppression , and then once on the arm to carry things too much power requirements are quite large.

Link box has almost become a travel the mandatory storage equipment, backpacks, can reduce weight to shoulder and spine section of the oppression, and then once the things your opponent too much arm strength requirements is quite large. The link with the story as the starting point in the original 4

The tension bar box has nearly become the business travel necessary Chu equipment, contrasts the knapsack to say may reduce the heavy item to the shoulder and the spinal column part oppression, once then carries the thing excessively are many to the arm strength request also is big.Embarks from the

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