When you turn on a transistorized radio, the sound comes on immediately; when you turn off, it fades out gradually.
你打开晶体管, 立刻就有声, 当你关它时, 声渐渐消失。
When you turn on a transistorized radio, the sound comes on immediately; when you turn off, it fades out gradually.
你打开晶体管, 立刻就有声, 当你关它时, 声渐渐消失。
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