剑桥词典happening outside the body in artificial conditions , often in a test tube (生物過程或生物反應)在躰外(常指試琯內)進行的 Scientists are studying these cells in vitro . 科學家們把這些細胞放在試琯裡進行研究。 in vitro experiments 在試琯中進行的實騐 返回 in vitro