Postamplifier
后置放大器
🗣️ 情景例句
It's been my experience that I agree that yours are of better quality.
根据我的经验来看，你们的产品质量的确较好。
I guess he's about 30.
我猜他大概30岁。
If no other sate water supply can be obtained,
如果没有其他安全的饮用水，