劍橋詞典happening outside the body in artificial conditions , often in a test tube (生物過程或生物反應)在體外(常指試管內(nèi))進行的 Scientists are studying these cells in vitro . 科學家們把這些細胞放在試管里進行研究。 in vitro experiments 在試管中進行的實驗 返回 in vitro