=> readily

/'redɪnɪs; `rɛdɪnɪs/
n [U]
1 state of being ready or prepared 有准备; 准备就绪
*the troops' readiness for battle 部队的临战状态
* have everything in readiness for an early start 为及早出发做好一切准备
* hold oneself in readiness to take control 准备好以便控制.
2 willingness or eagerness 愿意; 乐意
*her readiness to help 她乐于助人的品性.
3 quickness and facility; promptness 敏捷; 迅速
*readiness of wit 机智.

n
[U]
when you are prepared for something, or when something is ready to be used
in readiness (for sth)
　They stacked the firewood in readiness for the evening campfire.
[singular, U]
willingness to do something
readiness to do sth
　He stressed the government's readiness to take tough action against terrorists.