求翻译：作为航空公司，大约有80%的运营成本是固定成本或半固定成本。真正可变的成本只是客运代理的佣金、食品成本和票务费用等，而航空公司的收入则来自上座率。航空公司为了得到更多的利益，就必须在每次飞行中售出更多的座位，这给航空公司带来了激烈的竞争。是什么意思？

As airlines, about 80% of the operating costs are fixed costs, or semi-fixed costs. Truly variable cost only passenger agent's commission, food costs and ticket costs, the airline revenue from attendance. Airlines in order to get more benefits, we must in each flight sold more seats to the airline,

As a airline, about 80 per cent of the operating costs are fixed costs or semi-fixed costs. True variable cost only passenger Agent's commission, food costs and a ticket costs, and the airline, such as income from attendance. Airlines in order to get more benefits, it must be in each flight sold mor

As the airline, probably some 80% operation cost is the fixed cost or half fixed cost.The true invariable cost only is the passenger transportation proxy commission, food cost and the ticket clerk expense and so on, but airline's income comes from the booking rate.The airline in order to obtain more

As an airline, about 80% of the operational cost is fixed or semi-fixed costs. Real variable costs are passenger agent's commissions and ticket costs, food costs, while airline revenues from attendance. Airlines in order to get more benefits, it must sell more seats on each flight, which gave airlin

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