动词短语
中文翻译：努力
同义词：
['make an effort', 'put in the effort', 'exert oneself']
例句：
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1. She took pains to make sure everything was perfect for the party.
她努力确保一切为派对准备得完美无缺。
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2. He took pains to explain his reasoning clearly.
他努力清楚地解释他的理由。
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3. The teacher took pains to ensure that all students understood the lesson.
老师努力确保所有学生都理解了课程内容。