Audio-frequency amplification
[机] 声频放大器
🧩 词语组成解析
audio
['ɔ:diəu;'ɔ:diˌəu]
adj. 听觉的，声音的;音频的;
n. 声音回路;音响;可听到的声音;声音信号;
frequency
['frikwənsi]
n. 频繁性;[数][物]频率，次数;频率分布;
fr + equ =equal,even,表示“相等，平均” + enc + y [形容词后缀] → n.屡次；次数；频率
amplification
[ˌæmplifi'keiʃən]
n. 扩大;发挥;<物>振幅;放大率;
🗣️ 情景例句
It was not until yesterday that I noticed it.
我一直到昨天才注意到它。
So he keeps on studying after his English classes in order to prepare for life in America.
所以他在英语课下课后还继续学习，为以后在美国生活做准备。
These satellites go round the earth and help us to learn more about the earth, the weather and other things.
这些卫星绕着地球转，帮助我们更好地了解地球、天气和其他情况。