The authors stressed the anatomic characteristics of the head segment and its significance is the detection of small lesions in the pancreatic head.

作者发现胰头段胰管之解剖表现确有一定的规律性，熟悉它们，对于早期发现和寻找较小的胰头部病变甚为有益。

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Caterpillars move by a wave that starts at the back end of their body and sweeps through each segment until it reaches the head, pushing it forward.

毛毛虫移动时的每一波都是从身体的后段开始，然后这个波穿过身体的每一部分，一直到达头部，进而将整个身体向前移动。

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Richard Salant, head of the news division, reminded Paley that the second segment had already been announced as airing on Monday and that our viewers would be expecting it.

新闻部的负责人Richard Salant提醒Paley：第二部分将于下周一播出的消息已经通知给了我们的观众。

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The growing adoption rates of payment technologies by small-business owners might partially explain why credit demand for working capital from small firms remains stubbornly low, even as their balance sheets and credit-worthiness improve, according to Robb Hilson, head of Bank of America small-business segment.

WSJ: Mobile Payments Brighten Small-Business Cash Flow

Ray Irving, the school's head of learning resources development, explains that Warwick is targeting a different market segment, focusing on experienced managers with no option for a career break.

ECONOMIST: Should an MBA be open to anyone?

Though the price is high, Servio appears to be at the head of the pack in what is likely to become an increasingly necessary product segment as more of our lives revolve around digital information.

FORBES: Ten O'Clock Tech: Serving Up The Home