Timer is an instance of CSTimer, which is set to trigger every five seconds, at which time the device will double the current value of the multiplying factor.
timer是CSTimer的实例，它被设置成每5秒触发一次，每次触发时，设备会把乘数的当前值加倍。
Timer is an instance of CSTimer, which is set to trigger every five seconds, at which time the device will double the current value of the multiplying factor.
timer是CSTimer的实例，它被设置成每5秒触发一次，每次触发时，设备会把乘数的当前值加倍。
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