Furthermore, they claim that any such interference is completely ineffective.

此外，他们声称任何此类干涉都是完全无效的。

《柯林斯英汉双解大词典》

This makes HTTP multiplexing completely ineffective.

这会使HTTP多路复用完全失去效用。

youdao

Unfortunately, this does not work - it is completely ineffective.

不幸的是，这个并没有用——它完全无效。

youdao

And, with Stewart Downing's crossing completely ineffective on the opposite wing, England quickly ran out of ideas.

BBC: Andorra 0-2 England

But against a particular strain of Influenza B, the vaccine is proving completely ineffective.

FORBES: Why the Flu Is So Dangerous This Year, and Why It Could Get Worse

My favorite tip from The Pumpkin Plan is the concept that asking your own clients for referrals is awkward at best, completely ineffective at worst.

FORBES: Why Business Plans Don't Work And 'Pivoting' Is Nonsense