Oil and gas pipelines have been aged as time going on. The pipeline crack is an important feature, which influences the integrity of the pipeline.

油气管道随着服役时间的增加正趋于老龄化，管道出现裂纹现象是重要特征之一，它影响了管道的完整性。

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The main cause of forgetting ideal is that they think it's too far to reach in the lifetime. As time going on, discouragement surpasses the youth enthusiasm.

忘记理想的重要原因，是他们认为理想世界太远了，自己有生之年是不能实现了，失望之情渐渐压过青春热血。

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Besides going on studying Chinese, she shows great interest in Chinese kung fu as well, so she spends her free time on kung fu training with her coaches.

除了继续学习中文之外，她对中国功夫也表现出了极大的兴趣，所以她把业余时间都花在了与教练的功夫训练上。

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What is going on as a function of time?

作为时间的函数它将如何变化

耶鲁公开课 - 基础物理课程节选

There are legitimate ethical issues involved in all this -- the biotech industry, and those are going to continue as time goes on.

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Though the ocean liner had been scheduled to return Monday at 6 a.m. to Galveston, "as time went on we realized that they weren't going anywhere, " he said.

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