essential

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【词性】：adj．

【释义】：

❶ 本质的；基本的〔Kindness was an essential part of his character．善良是他的性格的基本部分。

〕
❷ 必要，必不可少的〔It is essential for guards on duty to stay awake．执勤的卫兵一定不能睡觉。〕‖ n．要素，要点；必需品〔Love is the one essential of a happy marriage．爱情是美满婚姻不可缺少的条件。〕／essentially adv．