Also, although the present system has hardly been perfect, it is not necessarily broken.
同样，尽管现有系统远不完美，但也没必要打破。
Congenital — Present at birth; not necessarily genetic.
出生即带的；并非都是遗传性的。
Past experience is not necessarily applicable to the present situation.
过去的经验未必适合当前的情况。
Past experience is not necessarily applicable to the present situation.
过去的经验未必适合当前的情况。
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