4 sentences

1. 别掩着你的脸。

   bié yǎn zhe nǐ de liǎn.

   Don't hide your face.

   Source: OpenSubtitles

2. 他用手掩住嘴巴，不敢笑出声来。

   tā yòng shǒu yǎn zhù zuǐ​ba, bù gǎn xiào chū​shēng lái.

   He covered his mouth with his hand, not daring to laugh out loud.

   Source: Dong Chinese Dictionary

3. 小心别让抽屉掩了手。

   xiǎo​xīn bié ràng chōu​ti yǎn le shǒu.

   Be careful not to get your hand caught in the drawer.

   Source: Dong Chinese Dictionary

4. 乘其不备，掩其不意。

   chéng qí bù bèi, yǎn qí bù yì.

   Catch them off guard and take them by surprise.

   Source: Dong Chinese Dictionary