1、contain

装有;容纳

The bag contained a Christmas card.

这个包里装着一张圣诞卡。

Factory shops contain a wide range of cheap furnishings.

工厂车间里陈设着种类繁多的廉价家具。

包含;含有

Greek yogurt contains much less fat than double cream.

希腊酸奶比高脂浓奶油所含脂肪要少得多。

Many cars run on petrol which contains lead.

很多车使用含铅汽油。

(著作、讲话或电影中)包括，包含

This sheet contained a list of problems a patient might like to raise with the doctor.

这张单子列出了病人可能会向医生提出的一系列问题。

The two discs also contain two of Britten's lesser-known song-cycles.

这两张唱片还包含了布里顿两首不甚知名的声乐套曲。

2、constant

持续不断的;重复的;一直存在的

She suggests that women are under constant pressure to be abnormally thin.

她暗示说女性总是处在保持身材异常瘦削的压力之下。

Inflation is a constant threat.

通货膨胀始终是个威胁。

恒定物;常数；常量；常项

In the world of fashion it sometimes seems that the only constant is ceaseless change.

在时装界，有时似乎唯一永恒不变的东西就是不断的变化。

Two significant constants have been found in a number of research studies.

若干研究已经发现了两个重要常量。