A plethora of something is a large amount of it, especially an amount of it that is greater than you need, want, or can cope with.
例句
A plethora of new operators will be allowed to enter the market.大批新的运营商将获准进入该市场。
英汉词典释义
n.
过多,过剩,过量
Java comes with a plethora of ready-made types.Java配套提供了数量众多的现成类型。All this plethora of sight, and feeling, and thought occurred on the instant. There was no pause of the realities wherein he moved.尽管林林总总的形象、感觉、思想猛然袭来,在现实中他的行动却并未中断。