在运输收入一定的情况下，航运企业必须加强船舶营运成本控制，降低成本，增加船舶的营运利润。
In case of transporting incomes certainly, shipping enterprises must strengthen the operation cost of shipping to control, lower costs, increase the operation profit of shipping.
航运企业的运费收入就是公司的利润来源。
Shipping company income is the source of the company's profits.
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