4 sentences

1. 人造卫星环绕地球飞行。

   rén​zào wèi​xīng huán​rào dì​qiú fēi​xíng.

   Artificial satellites orbit the Earth.

   Source: Dong Chinese Dictionary

2. 这些珠子是用人造材料制成的。

   zhè​xiē zhū​zi shì yòng rén​zào cái​liào zhì​chéng de.

   These beads are made of synthetic materials.

   Source: Dong Chinese Dictionary

3. 这种人造材料是皮革的理想替代品。

   zhè zhǒng rén​zào cái​liào shì pí​gé de lǐ​xiǎng tì​dài​pǐn.

   This synthetic material is an ideal substitute for leather.

   Source: Dong Chinese Dictionary

4. 人造卫星正在预定的轨道上平稳运行。

   rén​zào wèi​xīng zhèng​zài yù​dìng de guǐ​dào shàng píng​wěn yùn​xíng.

   The satellite is orbiting smoothly on its predetermined path.

   Source: Dong Chinese Dictionary