3 sentences for 投入 (tóu​rù — put into)

1. 请把选票投入票箱。

   qǐng bǎ xuǎn​piào tóu​rù piào​xiāng.

   Please put your ballot into the box.

   Source: Dong Chinese Dictionary

2. 废铁被投入炼钢炉中熔化。

   fèi​tiě bèi tóu​rù liàn​gāng lú zhōng róng​huà.

   Scrap iron was put into the steel furnace to melt.

   Source: Dong Chinese Dictionary

3. 他把硬币投入了自动售货机。

   tā bǎ yìng​bì tóu​rù le zì​dòng shòu​huò​jī.

   He dropped the coins into the vending machine.

   Source: Dong Chinese Dictionary