She had few friends, and was generally not functioning up to her potential.

她很少有什么朋友，总体来看没有发挥她的潜能。

《柯林斯英汉双解大词典》

This area is always tender to the touch if the intestines are not functioning properly.

如果肠功能不正常的话，这个部位总是一按就痛。

《柯林斯英汉双解大词典》

The body is not functioning properly.

人感到非常的累，机体功能也不正常。

youdao

Garwood says Gaza's health-care system also is not functioning as well as it could because Israel is preventing many medical professionals from leaving the Gaza Strip.

VOA: standard.2010.06.01

It's true that when you've got a corpse, you've got all the parts there, but clearly they're not functioning properly.

当你面对一具死尸时,肉体所有的部分的确都摆在那里,但它们显然无法正常运作

耶鲁公开课 - 死亡课程节选

Do we want to say the body's functioning or not functioning?

那我们说，身体是在运作还是不是呢？

耶鲁公开课 - 死亡课程节选

Computer systems were not functioning but data was manually adjusted, artillery expert Steven Krstic said.

BBC: Data error 'caused death of Kent Sapper Mark Smith'

Scotland also had the Irish scrum creaking while the home line-outs were not functioning to order.

BBC: O'Driscoll hat-trick downs Scotland

They are not functioning and we either do this dialysis or he dies.

FORBES: Nobel Laureate Paul Krugman is Correct, Cato Institute's Mitchell is Wrong