词典释义：
释义
become involved in (an activity, situation, or matter)
参与，卷入（活动，境况，事件）
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they have entered into a relationship .他们已发生了某种浪漫关系。
undertake to bind oneself by (an agreement or other commitment)
开始受（协议或其他承诺）的约束
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the council entered into an agreement with a private firm .政务委员会与一家私人公司达成了一项协议。
form part of or be a factor in
构成…的一部分；是…的因素
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medical ethics also enter into the question .医德也成了问题的一部分。
