portable electronic typewriter

例句：

1. 1.This laptop is very portable, so it can be easily carried around.
   这台笔记本电脑非常便携，所以可以轻松携带。
2. 2. The portable charger allows you to charge your phone anywhere.
   便携式充电器允许你在任何地点为手机充电。
3. 3. The portable radio is great for listening to the news on the go.
   便携式收音机非常适合在旅途中收听新闻。