【求助】请帮助翻译

特别注意事项：在220v区域使用前，请注意确认变压按钮是否处于220v设定状态下，以避免机械故障。
在使用220v电源时，不要将变压按钮设定在120v状态。

这应该是电器说明书吧！发达国家进口的吧。一般发达国家用110伏的电压。楼上翻译的不错。

The term "发达国家" is politically incorrect.

Developed country: 已发展国家
Developing country : 发展中国家

Avoid to use 发达国家、落後国家、贫穷国家等。

牵涉到政治了
中国现在属于中间国家？Lower Middle Income Country

最后一句是否没有按原意表达：变压按钮设定在120v状态时，不要将设备插入220V电源（不要使用220V电源）

In the international business, there are some special arrangements for the developing country, such as lower tax, certain examptions etc. Therefore, US called China as developed country ten years ago, but Chinese government insisted that China was still a developing country.

As far as I know that the Chinese government still claimed herself “Developing country” couples of years ago,