fastness
n. 要塞；城堡；坚固；不褪色；快速；偏远的地方
近义词：fort，speed，tower，deep，celerity，stronghold，fortress，castle，citadel，refuge，retreat，fortification，redoubt，secureness，fixedness，swiftness，fixity，fixture，
详细释义
n.(名词)
- 堡垒
- 要塞
- 牢固（性）
- 不褪色（性）
- 据点
- 固定（性）
- 迅速
- 抗（毒）性
- 放荡
- 坚固
- 坚牢
- 固着
- 【纺】坚牢度
- 急速
- 巩固
- 可靠（性）
英英释义
Noun
- a rate (usually rapid) at which something happens;
"the project advanced with gratifying speed"
- the quality of being fixed in place as by some firm attachment
- a strongly fortified defensive structure
例句
用作名词(n.)
- We guarantee the fastness of these dyes.我们担保这些染料不褪色。