Transistor emplifier
[电] 晶体管放大器
🧩 词语组成解析
🗣️ 情景例句
My computer was infected by a virus, I guess since I didn't have firewall installed.
我的电脑受到病毒感染了，我想是因为我没装防火墙。
Poverty shows us who are our friends and who are our enemies.
贫困才能显出敌和友。
He seems a little nervous.
他显得有点紧张。