柯林斯詞典fetus /?fi?t?s/ (fetuses) 1. N-COUNT A fetus is an animal or human being in its later stages of development before it is born. 胎兒 Pregnant women who are heavy drinkers risk damaging the unborn fetus. 酗酒的孕婦冒有傷害胎兒的危險。 返回 fetus劍橋詞典a young human being or animal before birth , after the organs have started to develop 胎兒，胎 返回 fetus