It's extremely cruel to perform an experiment on live animals.

对动物活体进行实验是一件极其残忍的事情。

youdao

The bear farming industry is extremely cruel.

活熊取胆是一个极其残忍的行业。

youdao

Some parents even whip their children, abusing their children with extremely cruel means.

有的家长甚至鞭打自己的孩子，用残忍的手段虐待孩子。

youdao

My vow must have seemed to you extremely cruel, or insane.

NEWYORKER: History of a Disturbance

"It depends on who comments are being levelled at - to a class of children, where there will be a distribution of body sizes, it is important to know being overweight can lead to diabetes, but it is more of a psychological issue than a health issue - and children can be extremely cruel, " he says.

BBC: Should we stop calling people 'overweight'?