本书是用浅显的英语写的，适合初学者。

This book， written (= which is written) in simple English， is suitable for beginners。

youdao

本书是用浅显的英语写的，适合初学者。

this book, written (= which is written) in simple english, is suitable for beginners.

youdao

你能帮助我用浅显易懂的英语来说明这一法律术语吗？

Can you help me translate this legal jargon into plain English?

《牛津词典》

But really what that means is the language that they're using is simpler, right?

但那其实真正意味的是他们用的语言很浅显，对吧？

英语阅读：技巧 - SpeakingMax英语口语达人