The delay launching Discovery cost the crew its lead spacewalker, Tim Kopra, who was injured in a bicycle accident in January.

本次发现号的推迟发射致使其太空行走的主要人员蒂姆。孔普拉未能升空。他在一月的一次自行车事故中受伤。

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Astronaut Tim Kopra will travel to the station to replace Koichi Wakata, who will return to Earth aboard the shuttle.

VOA: standard.2009.06.16

In addition, Endeavour delivered a new long-stay US crew member, Tim Kopra, to the ISS and will bring back Japan's Koichi Wakata, who has lived aboard the platform for more than three months.

BBC: Shuttle crew welcomed aboard ISS