3 sentences

1. 古代士兵穿着厚重的铁甲。

   gǔ​dài shì​bīng chuān​zhe hòu​zhòng de tiě​jiǎ.

   Ancient soldiers wore heavy iron armor.

   Source: Dong Chinese Dictionary

2. 古代将领披上铁甲，准备出征。

   gǔ​dài jiàng​lǐng pī​shàng tiě​jiǎ, zhǔn​bèi chū​zhēng.

   Ancient generals put on iron armor and prepared for battle.

   Source: Dong Chinese Dictionary

3. 这种新型坦克拥有极厚的铁甲。

   zhè zhǒng xīn​xíng tǎn​kè yōng​yǒu jí hòu de tiě​jiǎ.

   This new type of tank has extremely thick armor.

   Source: Dong Chinese Dictionary