But when it comes to embryonic learning, birds could rule the roost.

但是当涉及到胎教时，鸟类首屈一指。

I have yet to have a bull that ruled the roost.

我还没见过一头能当家作主的公牛。

First, what is to roost? To roost means to settle down for rest or sleep.

首先，什么是" roost（栖息）" ？" roost" 意思是停下来休息或睡觉。

Curses came home to roost, Mammy said.

如嬷嬷说的，诅咒别人的人必定自作自受。

Birds like to roost off the ground.

鸟喜欢在地面上栖息。

They do establish a dominance between them as to who is ruling the roost out there.

她们确实在她们内部建立了一种支配地位，谁在那里统治着。

In langur society females rule the roost and take the lead when the family is on the move.

叶猴族群是雌性独揽大权，并且是举家迁徙的领队人物。

What happens when your chickens come home to roost?

当你自食恶果（your chickens come home to roost）的时候会怎样？

A warning cry to fellow roost mates?

发送给蝙蝠同伴的警报叫喊？

An adult male rules this roost and has no intention of letting another male onto his patch.

这里是一只成年公猴的地盘，它可不想让其他公猴进入自己的领地。