fastness
英 ['fɑ?s(t)n?s]
美['f?stn?s]
- n. 牢固；不褪色；要塞；鞏固；堡壘；迅速
英英釋意
- 1. a rate (usually rapid) at which something happens;
- "the project advanced with gratifying speed"
- 2. the quality of being fixed in place
- 3. a strongly fortified defensive structure
