When you turn on a transistorized radio, the sound comes on immediately; when you turn off, it fades out gradually.
你打开晶体管收音
, 
就有
音, 当你关
它时, 音渐渐消
。
When you turn on a transistorized radio, the sound comes on immediately; when you turn off, it fades out gradually.
你打开晶体管收音, 就有音, 当你关它时, 音渐渐消。
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