Postamplifier
后置放大器
🗣️ 情景例句
Keep this information confidential, other companies would kill to get their hands on this.
这些资料可要保密，其他公司千方百计想得到它。
None but a wise man can employ leisure well.
唯智者善于利用空闲。
I visited museums and sat in public gardens.
我参观了博物馆，还去了公园。