3 sentences

1. 手术前必须对所有器械进行消毒。

   shǒu​shù qián bì​xū duì suǒ​yǒu qì​xiè jìn​xíng xiāo​dú.

   All instruments must be sterilized before surgery.

   Source: Dong Chinese Dictionary

2. 这间医院引进了最先进的医疗器械。

   zhè jiān yī​yuàn yǐn​jìn le zuì xiān​jìn de yī​liáo qì​xiè.

   This hospital has introduced the most advanced medical instruments.

   Source: Dong Chinese Dictionary

3. 守城士兵准备好了各种防御器械。

   shǒu​chéng shì​bīng zhǔn​bèi hǎo le gè zhǒng fáng​yù qì​xiè.

   The soldiers defending the city prepared all kinds of defensive equipment.

   Source: Dong Chinese Dictionary