The first class business class section, the average survival rate of only 49%.
而头等舱商务舱部分的平均存活率只有49%。
The business class section is upstairs and the economy class is right on this floor.
商务舱在楼上，经济舱就在这一层。
The business class section is upstairs and the economy class is right on this floor.
商务舱在楼上，经济舱就在这一层。
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