2 sentences

1. 最困难的是原材料的成本。

   zuì kùn​nan de shì yuán​cái​liào de chéng​běn.

   The hardest part is the cost of raw materials.

   Source: CCMatrix

2. 我们一半的原材料来自于农场和森林。

   wǒ​men yī​bàn de yuán​cái​liào lái​zì​yú nóng​chǎng hé sēn​lín.

   Half our raw materials come from farms and forests.

   Source: CCMatrix