He has carried out extensive research into renewable energy sources.

　　他已經(jīng)對再生能源進(jìn)行了廣泛研究。

　　The research was carried out on a modest scale.

　　這個(gè)研究項(xiàng)目開展的規(guī)模不算太大。

　　The experiments were carried out under simulated examination conditions.

　　試驗(yàn)是在模擬的情況下進(jìn)行的。

　　Carry on the good work!

　　干得不錯(cuò)，繼續(xù)努力吧！

　　She ignored him and carried on with her work.

　　她沒理他，繼續(xù)干她的活。