Certain reference architecture layers are redundant in that they perform no added value and merely "pass-through" data to the next immediate layer in the architecture.

有些参考架构层显得多余，它们没有任何附加值，仅仅向架构的另一个中间层“传递”数据。

youdao

That they do seem to add significant value will come as a relief to charities: it could well have turned out that they added no value or even that their costs outweighed their benefits.

ECONOMIST: Charities

Little or no additional value is added.

FORBES: The Optimum Asset Allocation to Gold Is Always Zero

"Parents find the tables interesting and use them and there is no doubt that putting value-added indicators on is better, but they still don't tell the whole story about what a school is like, " she said.

BBC: What parents want in schools