以下为句子列表：
英文: No, corrosion was observed on the submerged production pump after its return on the surface, nor in the production pipes which were shown, for the statements of the hydraulic testing manager, surprisingly easy to dissemble.
中文: 水利测试经理难掩惊讶地说，在将潜水生产泵拉回地面时，发现无腐蚀状况，而生产管线也没有出现腐蚀。
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英文: We must study the instruction before operation the pipe bender (hand pump, hydraulic testing pump).
中文: 在操作弯管机（手压泵、液压试压泵）之前，我们必须先学习说明书。
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