Postamplifier
后置放大器
🗣️ 情景例句
Bicycle theft is on the increase in the big cities.
大城市里盗窃自行车的案件与日俱增。
Laws catch flies but let hornets go free.
法网只捉苍蝇，不捉黄蜂。
We enjoyed driving along the new expressway.
我们喜欢沿着新建的高速公路开车。