这种病没法治，尽管药物可以延缓病情的发展。
There is no cure for the disease, although drugs can slow down its rate of development.
它们能够降低医学倒退的发生率或者延缓倒退-抵消相转换的医学形式，但是，药物并不能够改变这些症候。
They can reduce the incidence of relapse or extend time between relapses in the relapsing-remitting form of MS but symptoms are not changed by the drugs.
官员们正在调查昂贵的品牌药物的销售者是否正在一起策划延缓便宜的学名药的上市。
Officials are investigating whether sellers of expensive branded pills conspired together to delay the launch of cheap generic rivals.
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