4) This is to com bat attenuation that can render the signal indistinguishable from noise.这是为了防止信号衰减,而这种衰减 则是由噪音导致的信号模糊。 注释:this指上文所说的必须要有一个放大器或转发器;不定式to combat attenuation是表语。 5)Alternatively, one could allocate each channel a recurring segment of time over which to broadcast--this is known as time-division multiplexing and is sometimes used in digital communication.作为选择,你也可以给每个通道分配一个专门用来 播放的循环时间段一这就是所谓的时分多址,这种技术有时候被用于 数字通信。 注释:注意动词 allocate后面带的是双宾;短语 over which to broadcast中的 which指代 a recurring segment of time。 G20212120P4GG End 12021/2/20 P.4 4) This is to combat attenuation that can render the signal indistinguishable from noise. 这是为了防止信号衰减，而这种衰减 则是由噪音导致的信号模糊。 注释： this指上文所说的必须要有一个放大器或转发器；不定式to combat attenuation是表语。 5）Alternatively, one could allocate each channel a recurring segment of time over which to broadcast — this is known as time-division multiplexing and is sometimes used in digital communication. 作为选择，你也可以给每个通道分配一个专门用来 播放的循环时间段—这就是所谓的时分多址，这种技术有时候被用于 数字通信。 注释：注意动词allocate后面带的是双宾；短语over which to broadcast中的which指代a recurring segment of time。 End