The bumblebee sizzed right under his straw hat.大黄蜂就在他的草帽底下丝丝作声.A bumblebee stung me on the cheek.一只大黄蜂在我脸上螫了一下.In a word, physicists noted that flying, was impossible to bumblebee.简单地说, 大黄蜂这种生物, 根本是不可能飞得起来的....
The acid ewolises nearly as well as the ester.此酸的烯醇化几乎象酯一样良好.Diphenyl carbonate shows a typical vinyl ester effect.碳酸二苯酯表现典型的乙烯的酯类的效应.Ester is one of the most important compounds in Organic Chemistry.酯是有机化学中最主要的化合物之一....