She means "Donnie Dioxin: Badly Misunderstood But Actually Quite Useful under Correct Usage Conditions."

她说的是《唐妮·二恶英：饱受误解但如果正确使用其实用途很多》那本书。

youdao

This is useful under very specific circumstances, because coded UI tests enable you to capture performance at the UI layer.

这是在非常特殊的情况下很有用的因为 UI 测试的程式码可让您撷取 UI 层级的效能。

youdao

That very useful tunnel leads right up under the butler's pantry, next to the dining-hall!

那条非常有用的地道正好通到宴会厅旁边的备膳室下面！

youdao

If I'm working under conditions of constant temperature and volume, that's very useful.

如果在恒定的温度和体积下,进行一个过程，这是非常方便的。

麻省理工公开课 - 热力学与动力学课程节选

Thanks largely to the World Health Organisation, now at last playing a useful role under the leadership of Gro Harlem Brundtland, a Global Alliance for Vaccine and Immunisation has been set up, with backing, financial as well as verbal, from philanthropists such as Microsoft's Bill Gates.

ECONOMIST: Africa��s twin scourges

She has some useful vision which deteriorates under tiredness, stress and pressure.

BBC: Visually impaired sailor's solo Windermere challenge

Which would be a useful addition to an under-developed market.

BBC: Cable rehabilitates investment banking