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"The device is very user-friendly.""User-friendly" is an adjective that describes something that is easy to use or understand, especially technology or a computer program.
For example:
"I really appreciate how user-friendly this software is. It's so easy to navigate and use." (这个软件非常好用。很容易浏览和使用。)
"The new smartphone is really user-friendly. I was able to figure out how to use all the features within a few minutes." (这款新智能手机非常好用。我几分钟内就学会了如何使用所有功能。)
The phrase "user-friendly" comes from the field of human-computer interaction, where it was used to describe technology that is easy for people to use. It has since become a common phrase in many other fields as well.
来源：作文地带整理
