更多意思
adj.1.  有效的,产生预期效果的
2.  (法律和规则)生效的,起作用的
3.  实际的,事实上的
参考例句
1. | The law is no longer effective . |
| 该法令已失效。
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2. | Commercial television is an effective medium for advertising. |
| 商业电视是有效的广告宣传工具。
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3. | Effective defence is a matter of intercepting their missiles before they can reach us. |
| 有效的防卫是不待对方导弹击中我们而先行将其拦截。
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4. | Gentle persuasion is more effective than force. |
| 温和的说服胜于压服。
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5. | This country lacks an effective party of the centre. |
| 这个国家缺少一个能起作用的中立党派。
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