2 sentences

1. 太阳的光线直射在水面上。

   tài​yang de guāng​xiàn zhí​shè zài shuǐ​miàn shàng.

   The sun's rays shine directly onto the water.

   Source: Dong Chinese Dictionary

2. 这种材料在阳光直射下会变色。

   zhè zhǒng cái​liào zài yáng​guāng zhí​shè xià huì biàn​sè.

   This material changes color when exposed to direct sunlight.

   Source: Dong Chinese Dictionary