3 sentences

1. 这种油漆里含有大量的铅。

   zhè zhǒng yóu​qī lǐ hán​yǒu dà​liàng de qiān.

   This paint contains a large amount of lead.

   Source: Dong Chinese Dictionary

2. 焊锡是由锡和铅组成的合金。

   hàn​xī shì yóu xī hé qiān zǔ​chéng de hé​jīn.

   Solder is an alloy composed of tin and lead.

   Source: Dong Chinese Dictionary

3. 我打算下个月去铅山县考察当地的历史文化。

   wǒ dǎ​suàn xià gè yuè qù yán Shān xiàn kǎo​chá dāng​dì de lì​shǐ wén​huà.

   I plan to go to Yanshan County next month to explore the local history and culture.

   Source: Dong Chinese Dictionary