爱词霸英语   汉语   手机版   软件版下载 | English
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1.A powerful drug.
2.an operative medicine
3.In effect; operative.
4.treaty in force
5.Valid travel document is required.
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6.A rule that is no longer in force.
7.an indissoluble agreement
8.practical and effective measures;
9.A valid assumption.
10.the most expeditious means
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同义词辨析
这两个形容词均有“有效的”之意。
effective: 侧重产生实际的效果、效力或具有取得预期效果的能力,指人指物都适用。
efficient: 侧重指积极有效,效率高,效果好,节省精力。指人时,强调其能干、熟练的技巧。