他的哥哥非常强势。

His older brother is very ___dominant.

他是个非常霸道的男孩，我很怕他。

He was a very ___dominant boy and I was afraid of him.

在许多动物群体中，阿尔法雄性表现出支配性行为。

In many animal groups, the alpha male displays ___dominant behavior.