fastness

fastness的英语例句

1. We guarantee the fastness of these dyes.

   我们担保这些颜料不褪色.

2. The rebels have withdrawn to their mountain fastness for the winter.

   叛军撤至他们的山寨过冬.

3. They could have withdrawn into the mountain fastness of Eryri.

   他们本可退到山中要塞埃利里去。