Scientists test out theories by experiment.科学家用实验来检验理论.Theories abound, but scientists are at a loss to explain this infanticidal behavior.理论比比皆是, 但科学家都处于一种茫然不知所措解释这infanticidal行为.In general, his theories are based on th...
Over the years several similar theories have been put forward.几年来已经有好几个类似理论相继提出。I looked forward to the exploration of their theories.我期待着研究他们的理论。We'll always justify our actions with noble sounding theories.我们总会用听起...