2008年3月1日 1 Requirement: Air inlet must start to open when down stream pressure is 1.0 PSI or above. 已记 看解释 2 Requirement: Below 30 years old. Ab...

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2017年5月3日 注意:as常用于下列结构:as we know/ as is known to all, as we all can see, as has been said before/above, as might be excepted, as is often th...

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30 years of above-average temperatures means the clima...

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2012年12月11日 15. My mother is fifty years old. 我母亲已经五十岁了。 16. He was always fighting with his neighbors about the noise.