| 1. | This train ticket is valid for three days . 这张车票3日内有效。
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| 2. | Newton's law of universal gravitation is valid . 牛顿万有引力定律是正确的。
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| 3. | How long will the registered trade-mark remain valid ? 注册商标的有效期多长?
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| 4. | This assumption is often valid . 这一假设通常是成立的。
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| 5. | Equal pay for equal work is valid . 同工同酬是正当的。
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| 6. | Disavowal of pain is valid . 否认疼痛是有确实根据的。
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| 7. | Physics can arrive at universally valid uniformities . 物理学能够达到普遍有效的齐一性。
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| 8. | Her excuse was not valid . 她的借口靠不住。
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| 9. | This explanation of britain's rise was partly valid . 对英国崛起所作的这种解释部份是站得住脚的。
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| 10. | It'll take two years, sir, to be valid against death duties . 先生,这要等过两年才能免除遗产税呢。
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