amplify
/ˈæmplɪfaɪ; `æmpləˌfaɪ/ v
(pt, pp -fied) [Tn]
1 increase (sth) in size or strength 放大或增强（某事物）
amplify the sound, electric current, signal 增强声音, 电流, 信号.
2 add details to (a story, etc); make fuller 补充叙述（故事, 事件等）; 详述
We must ask you to amplify your statement. 我们得请你对你的说法作进一步的说明.