adj.无数的；多的数不清的
In early spring sunlight scattered countless dust. 初春的阳光散落无数的尘埃。
There were countless trees in the forest. 森林中有数不清的树。
We received cash, hams, turkeys, and countless boxes of candy. 我们收到了现金、火腿、火鸡，还有数不清的盒糖。
No one can plead ignorance of a subject any longer, for there are countless do-it-yourself publications. 由于出版了不计其数的教人自己动手做事的书报杂志,没有人再能说对某事一无所知。
