She says they learned that polar bears often have trouble finding food. She says the lack of food can affect their mental health.

她说他们发现了北极熊常常在寻找食物上陷入困境，而缺乏食物会影响他们的心理理健康。

youdao

It says they generally do not feel pain, but may wish to talk to a mental health provider if the memories trouble them.

总的来说他们不会感觉到什么痛苦，但是如果这样的记忆对他们造成困扰的话，他们就会希望要找心理健康医生咨询一下。

youdao

So any blood trouble, whatever the causes maybe, will bring about symptoms of mental activities varying in degrees.

所以不论什么原因导致的血液问题都会引起不同程度上的精神症状。

youdao

And the mental anguish included losing the booking on Looks Like Trouble just weeks before the horse went on to win the Cheltenham Gold Cup in 2000.

BBC: Norman Williamson