litter是不可数名词。
litter
n.(在公共场所乱扔的)垃圾,废弃物,杂物;乱七八糟的东西;乱放的杂物;
v.使乱七八糟;使凌乱;乱扔;使饱含,使遍布;
第三人称单数: litters;
复数: litters;
现在分词: littering;
过去式: littered;
过去分词: littered
It was drilled into us at an early age never to drop litter.
我们从小就被叮嘱绝不能乱扔垃圾。
Piles of books and newspapers littered the floor.
地板上乱七八糟地堆了许多书和报纸。
The floor was covered with a litter of newspapers, clothes and empty cups.
地板上到处都是乱七八糟的报纸、衣服和空杯子。