With most medical implants, such as pacemakers and hip replacements, the risk of infection decreases over time.

对于各种各样的人体植入物，例如心脏起搏器，髋关节置换物，这种受感染的可能随着时间会逐渐减小。

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Hypothetical Kongo replacements. The first uses 16" guns in new "Yamato" style turrets, the other uses turrets recycled from the older Battleships.

架空的金刚级代舰，上图使用16寸大和级新炮塔，下图使用老式战舰上拆除的炮塔。

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Today,it is happening every few months. The replacements are increasingly young and inexperienced.

VOA: standard.2010.05.20

He was among the replacements in the Premiership final at Twickenham between current club Gloucester and future employers Leicester.

BBC: Davies announces Leicester switch

Williams has been out of action since injuring his wrist in January, but is named among the replacements for the trip to Welford Road.

BBC: No Worcester Warriors injury crisis, says Hill

Jones has been given the chance to lead the side at the Stadio Flaminio by coach Warren Gatland, with Ryan Jones named among the replacements for the Italy clash.

BBC: Williams backs Jones as captain