早期的移动电话使用模拟信号，他比后来的数字信号手机发射出功率更强的信号。
Earlier mobile phones used analogue signals which emitted higher power signals than the later digital models.
这个符号手表可以拿起无线电信号从德国和英国。
Watches with this symbol can pick up radio signals from Germany and the UK.
这个符号手表可以拿起无线电信号从德国和英国。
Watches with this symbol can pick up radio signals from Germany and the UK.
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