1. speed up 加速
I had already taken steps to speed up a solution to the problem.
我已經(jīng)采取措施加快解決這個問題
。2. make up 組成;彌補
Nothing can make up for the loss of a child.
失去一個孩子是任何東西都無法彌補的
。3. catch up 追趕;趕上
He stopped and let her catch up with him.
他停下了,讓她趕上自己
。4. in order to 為了
He only gave his consent in order to gratify her wishes.
他只是為滿足她的愿望才同意的
。