What do you mean you can't do it? It'll be like shooting fish in a barrel!

你说干不了是什么意思？这不是小事一桩嘛！

What is known is that although the situation might seem like shooting fish in a barrel the bears don't just grab a beluga and call it dinner.

人们只知道，尽管那场景可能像是桶里抓鱼，但熊并不是抓住白鲸就吃。