which needs careful consideration
(指人，作宾语，可省略) It’s the question that/which needs careful consideration. (指物，作主语，不可省略) The book (which/that) you lent me is very interesting.
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which needs careful consideration
这需要仔细考虑
以上为机器翻译结果，长、整句建议使用 人工翻译 。