Fifty states compose (or constitute or make up ) the Union.

50州组成（或用 constitute 或 make up ) 联邦 。

She composed herself to answer the letter.

她镇静下来写回信。

At the age of six he was already composeing at the piano.

他六岁时即用钢琴作曲。

The university is composed of five academic schools.

整大学由五学院组成。

Yesterday he composed a piece of music.

昨天他作了一首曲子。

All animals and plants are composed of cells.

一切动植物均由细胞组成。

He composed a lament to the dead soldier.

他为那位阵亡战士谱写了一首挽歌。

Over half the army was composed of conscripts.

军中一半以是被征入伍者。

The ore-bearing rock is composed mainly of andesitic tuff and tuffite.

作者在赋矿层中首次发现了层状电气石岩。

We should compose ourselves in the face of fear.

我们在危险时要保持镇静。

Every day he typed what he composed.

他每天都用打字机把他创作作品打下来。

19 Their attitude is amiable, composed and couth.

他们态度祥和，雍容儒雅。

The deta-sigma ADC is composed of analog deta-sigma modulator and decimator.

模拟过采样调制器还可以应用于处理音频信号D类功率放大器中。

The houses in my hometown were chiefly composed of wood.

我家乡房子过去多由木料制成。

The exine is composed of tectum, columellae, foot layer and endexine.

花粉外壁由顶盖层、柱状层、底层及外壁内层所组成。

The book comprises (that is, consists of or is composed of) 15 chapters.

这本书有（意思是由…组成） 15章。

The micrib belonging to bicollateral bundle is well developed.The bundle sheath is composed of idioblasts.

主脉发达，有异细胞组成维管束鞘，具双生韧皮部。

Then the decimal base which is composed by74LS90 and 74LS08 and senary counting circuit.

然后又由74LS90和74LS08组成十进制和六进制计数电路。

Dispersed repetitive sequence is mainly transposable elements which are composed of transposon and retroposon.

散在重复序列主要是可转移因子,可转移因子分为转座子和返座子两种类型。

Infructescence a capitate or globose coenocarpium composed of numerous achenes.

果序为由许多瘦果组成头状或者球状聚花果。