1. 进行实验 , 试验 [(+on/with)] He is experimenting with drugs to cure hepatitis. 他正在试验治疗肝炎的药。 Have they ever experimented on a large number of patients? 他们可曾在大批病人身上实验过 ?

1. 实验 ; 试验 [C][U][(+on)] Some people learn by experiment and others learn by experience. 一些人通过实验学习 , 另一些人则从经验中学习。