介绍： 1. rough: If a surface is rough, it is uneven and not smooth.

Eg: His hands were rough and callused, from years of karate practice.

2. negligible: An amount or effect that is negligible is so small that it is not worth considering or worrying about.

Eg: The pay that the soldiers received was negligible.

介绍： 1. rough: If a surface is rough, it is uneven and not smooth.

Eg: His hands were rough and callused, from years of karate practice.

2. negligible: An amount or effect that is negligible is so small that it is not worth considering or worrying about.

Eg: The pay that the soldiers received was negligible.