而且，强连通无法推广到强连通分支。
And strong connection is not spreaded to strong connected brance.
盲目的改善无用甚至有害的治疗方法却无法推广有效的治疗方法是很危险的。
It is dangerous to blindly bolster useless and even harmful treatments while failing to support proven therapies.
预防 医学耗资巨大，使其无法推广，但现有统计资料证明对某些疾病的预防措施是确有成效的。
The cost of prevention medicine keeps it from being widely applied, yet available statistics justify the validity of preventive efforts in certain specific diseases.
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