形容词
中文翻译：首要的
同义词：
['primary', 'chief', 'fundamental例句：1. The primary function of this machine is to cut wood.（这台机器的主要功能是切割木材。）']
例句：
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1. The primary function of this machine is to cut wood.
这台机器的主要功能是切割木材。
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2. The primary goal of the research was to find a cure for cancer.
这项研究的主要目标是找到治疗癌症的方法。
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3. The primary reason for their success was their strong teamwork.
他们成功的主要原因在于他们的团队合作。