它的意思刚好就是要像一只熊一样勇敢。

It actually means brave as a bear.

youdao

纳尔逊海军上将时为一名勇敢的14岁的少尉候补官，他仅用滑膛枪托与遭遇的北极熊搏斗的故事可以肯定是个神话，不过其他的故事倒是真的。

Admiral Nelson's encounter as a plucky 14-year-old midshipman fighting only with the butt of his musket is surely a myth, but others are true.

youdao

在所有情况下，除了熊和豹以外，母的都没有公的勇敢。

In all cases, excepting those of the bear and leopard, the female is less spirited than the male.

youdao