题目

英语翻译
Checking the remote control
These days almost every player comes with a wireless remote control.Some use ultrasonics ,but most operate using infrared signals.(Both are invisible and perfectly safe.)Become familiar with the controls,how they operate,and what they do.For this refer to the owner is manual.The signal from a remote control can be blocked if something is between the remote control and the player .Excessive distance between the two might also prevent operation.

提问时间：2020-12-19

答案

检查遥控器
现今几乎每种设备都带有无线遥控器.一些使用超声波,但是大多数使用红外信号.（两种都是看不见的并且非常安全的.）要熟悉遥控器,知道如何操作它们以及它们可以做些什么.这些都可以从操作手册上知道.如果遥控器和设备之前有东西,遥控器发出的信号会被阻隔.两者之间超过一定距离也会操作失灵.