如常的英文：
as usual

usual是什么意思：
adj. 通常的，寻常的；惯例的
n. 惯常的事物；常喝的饮料

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。