transitional form

基本解释

I asked White whether Ardi's transitional form might justify calling Ar. ramidus a "missing link."
我问怀特阿迪的过渡形态是否意味着地猿始祖种就是所谓的“缺失的一环”？
The consensus had been that habilis was a transitional form between Australopithecus and Homo erectus.
人们一致认为“能人”是南方古猿和直立人之间的过渡物种。
To know which scenario was correct, the researchers needed to find a transitional form — with characteristics that fall somewhere between bottom-dwellers and the permanently 'rafting' janthinids.
为了研究出哪种猜想是正确的，研究人员需要找到过渡类型，既有底栖蜗牛的特性也有漂浮泡泡蜗牛的特征。