Is very simple, but with reference value.

非常简单，但是具有参考价值。

youdao

Residue seems to self-generate but it doesn't self-destruct! Delete what you can to begin with, and purge your reference files regularly, as things get out of date and lose their value to you.

残留似乎是自我产生的 但它不会自我消除.删除你能够删除的 时常整理你的参考文件 当它失去时效 失去价值.

youdao

This paper is valuable not only in theory but also with reference value in engineering practice.

本文不仅有理论意义，而且对工程实践也有参考价值。

youdao