他是一个占主导地位的哥哥。
He is a ___dominant older brother.
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.
在这个生态系统中,狮子是处于支配地位的捕食者。
In this ecosystem, the lion is the ___dominant predator.