大抵的英文：
mainly
usually

"In most birds, the male is bigger and more brightly colored than the female."
"雄鸟大抵都比雌鸟大,而且羽毛颜色更鲜艳。"

The man who is always worrying whether or not his soul will be damned generally have a soul that is not worth a damn.
老是担心自己的灵魂是否会被打入地狱的人，其灵魂大抵不值分文。

Perhaps he's used to "things" lost and found with the same casualness, not just wives.
大抵他对于一切的得失，向来都作如是观，非只妻子而已。

hera(Juno),Known to us chiefly as the wife of Zeus, was a daughter of Cronus and Rhea
提到赫拉(朱诺)，我们大抵都知道她是宙斯的妻子;她原来是克洛诺斯和瑞亚的女儿。

Coke consists mainly of carbon.
焦炭的主要成分是碳。

This abbreviation is used mainly in adverisements.
这一缩写主要用在广告中。

Rice grows mainly in the south.
稻米主要产在南方。

The birds live mainly on nectar.
这些鸟主要以花蜜为食。

This side of the island is populated mainly by fishermen.
在岛的这一边居住的主要是渔民。

Usually y is a function in math.
X is not a function in math.

Used as the usual style for a baron.
男爵用作男爵的常用称呼。

Mothers are usually gentle with their babies.
母亲对自己的婴儿总是很温柔。

Men usually have deep voices.
男人的嗓音一般深沉。

He usually fares sumptuously.
他平常吃得很丰富。