a large group of soldiers who form a part of an army, especially the ancient Roman army

Caesar's legions marched through France and crossed into Britain. 恺撒的军团穿过法国进入英国。

large numbers of people

He failed to turn up for the concert, disappointing the legions of fans waiting outside. 他没有在音乐会上露面，这让等在场外的众多歌迷感到非常失望。

They employ legions of brilliant programmers.

Legions of investors still hold stocks that haven't recovered from the collapse.

Legions of volunteers helped feed people displaced by the wildfire.

Legions of tourists descend on the town every summer.

very large in number

The difficulties surrounding the court case are legion. 这个庭审案件困难重重。