The National Congress is composed of ten senators.

国会由十位参议员组成。

All matter is composed of tiny particles.

所有的物质都是由微粒构成的。

Matter is composed of molecules that are composed of atoms.

物质由分子组成，而分子则是由原子组成。

Is composed of multiple packages.

由多个包组成。

The top half is composed of muscle.

尾部前半段由肌肉组成。

History is composed of annotations.

历史是由注释组成的。

The universe is composed of matter.

宇宙是由物质组成的。

The ocean is composed of salt water.

大海是由海水组成的。

The book is composed of 60 chapters.

这本书是由60章所组成的。

Each pool is composed of 12 modules.

每个模注力游泳池由12个模块组合而成。