名词
中文翻译：正常链
同义词：
['normal link', 'normal chain link']
例句：
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1.The normal chain of events led to the discovery of a new drug.
正常事件链导致了新药物的发现。
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2.The chains of evidence were strong enough to support her claim.
证据链条足够强，支持了她的主张。
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3. The construction workers had to follow the normal chain of safety procedures.
建筑工人必须遵循安全程序的正常链。