短语
中文翻译：按照原则
同义词：
['by the book', 'by the rules']
例句：
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1. We should follow the company's policy strictly by principle.
我们应该严格遵循公司的政策。
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2. The teacher explained the problem by principle.
老师按照原则解释了这个问题。
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3. He insisted on his point of view by principle.
他坚持自己的观点，按照原则行事。