OG11-38 Dr. Tonegawa won the Nobel Prize for discovering how the body can constantly change its genes to fashion a seemingly unlimited number of antibodies, each targeted specifically at an invading microbe or foreign substance.
请问targeted为什么是过去分词形式？antibodies target at an microbe，应该是主动而不是被动吧？为什么不用targeting？
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发表于 2008-8-25 08:11:00
