It can be said that human medicine every step forward, with blood and lives are achieved, the lessons learned from the experience and failures in the past.
可以说人类医学每向前走一步，都是用血和生命换来的，经验是从教训和失败中得来的。
It can be said that human medicine every step forward, with blood and lives are achieved, the lessons learned from the experience and failures in the past.
可以说人类医学每向前走一步，都是用血和生命换来的，经验是从教训和失败中得来的。
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