就是因为他们受到来自制药公司直接或间接的压力。
Because of direct or indirect pressure from the pharmaceutical companies.
有人说肿瘤治疗药物相对缺乏的原因之一是因为对于制药公司来说他们无利可图。
Some claim that one reason for the relative absence of oncology drugs is that they are not profitable for pharmaceutical companies.
之所以这样说是因为制药企业有大量而可靠的现金来源。
One reason to think so is that the pharmaceutical industry is known for its large, reliable cashflows.
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