1. They plugged their guitars into amplifiers. 他们将吉他接到了扩音器上。
2. These early electric guitars were hollow and these early amplifiers caused vibrations in the bodies of the instruments. 这些早期的电吉他是空心的,而且早期的这种扩音器会造成乐器器身产生振动。
3. Unpacking the amplifiers is an experience in itself. 拆开放大器本身就是一个经验。
4. Prepare microphones, amplifiers good debugging equipment. 准备好话筒,调试好扩音设备。
5. These amplifiers have long been made with tiny election tubes. 这些放大器是用微型电子管制成的。