The lens cap protects the lens from dust.

镜头盖可以保护镜头免受灰尘侵害。

These goggles can protect your eyes from dust.

这些风镜可以保护你的眼睛免受灰尘。

Earwax can protect the ear from dust and bacteria.

耳屎可以保护耳朵免受灰尘和细菌的侵害。

He papered the old books to protect them from dust.

他用纸覆盖了旧书以防止灰尘。

The substrate must be dry, solid, and free from dust.

墙面基层必需干燥、牢固、无尘埃。

The precision instrument must be kept free from dust.

精密仪器必须保持无尘.

We put our books in bookcase to keep them free from dust.

我们把书放进书柜目的不落上灰尘.

It could prevent from dust , dirty as well as topple down.

以快节奏,高效率的工作特性赢得客户们的高度赞赏.

Base treatment :The base should be soild, and free from dust and dirt.

基层处理：墙体表面应坚实、无浮灰和污物。

Keep away from dust, humidity, rain, heat source and direct sunlight.

尽量避免灰尘 、 潮湿 、 雨水 、 高温和直接阳光照射.