Hello糖咖啡
22寸登机箱22 inch chassis 箱 [名] box; case; chest; anything in the shape of a box; trunk; [例句]投票箱被人调换了。The ballot boxes have been switched.

小小miffy
luggage case其实就是登机箱,UNCHECKED BAGGAGE 自理行李luggage case是不托运,自己携带的行李箱,各公司对此种luggage case大小要求有不同
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