activate
v[Tn]
1 make (sth) active 使(某事物)活动
The burglar alarm was activated by mistake. 防盗铃误响了.
2 (physics 物) make (sth) radioactive 使(某物)产生放射性.
3 (chemistry 化) make (a reaction) happen more quickly, eg by heat 使(反应)加快(如藉加热); 使活化.
Yes. I don't think it's necessary to buy the bigger one.
有哇。我认为没必要买较大的机子。
Of course he is. He's very successful. He's made lots of records. They broadcast a programme of his music last month on the radio. Why don't you come on Saturday? I think you'd enjoy it.