结果表明，大尺寸的非金属夹杂和背帽外缘的点焊是引起泵轴过早断裂的主要原因。
The fracture of the pump shaft is mainly caused by large size non metallic inclusions and point welding between the lock nut and the pump shaft.
确是一个男人，戴鸭舌帽的，走在马吕斯前面，相隔二十来步，虽然只望见他的背，却能看出他的灰白胡须。
A man, in fact, wearing a gray cap, and whose gray beard could be distinguished, although they only saw his back, was walking along about twenty paces in advance of Marius.
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