be composed of与consist of与be made up of三个词组都有由什么组成的意思，具体区别，用法是什么呢？

事实上区别不大，很多时候可以互换

be composed of:
由…组成

例句和用法

In fact, happiness may be composed of anything you could ever think of.

当然，有一些人只要基本的生活需求得到满足就可以立刻感到很幸福。

The collegial panel shall be composed of 3 trademark reviewing officers or of an odd number above 3.

合议组由商标评审人员3人或者3人以上单数组成。

The name of a variable, its identifier, can be composed of letters, digits, and the underscore character.

变量名称，即它的标识符，可由字母、数字和下划线构成。

consist of： 由……组成；由…构成，包含有；组成

What will life consist of on other planets?

在其他的星球上，生命将由何组成？

All bodies consist of molecules and molecules of atoms.

物体由分子构成，分子又由原子构成。

I do not know what soundness of mind exactly consist of.

我不知道心灵的健全到底是由什麽构成的。

Modern wind farms consist of turbines that generate electricity.

现代风力农场由发电的涡轮机组成。

Their life consist of the humdrum activity of everyday existence.

他们的生活由日常生存的平凡活动所构成。

be made up of： 由……组成，由……构成

Because your life should be made up of happiness.

因为快乐才是你的人生。

Will the resulting solid be made up of crystals or not?

得到的固体是不是结晶而成的呢？

A life worth living should be made up of continuous efforts and progresses.

只有不断的努力和进步，方能成就有意义的生活。

Maybe that's the way life is.Life can be made up of a variety of unrelated things.

生活也许本来就是这样的，是由各种看来完全无关的事拼凑而成。来自：求助得到的回答

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