liter的复数形式怎么拼写

Add 20 mg. of diatomaceous earth filter aid per liter of solution.对每升溶液加入20毫克硅藻土助滤剂.The bottle holds a liter of beer.这个瓶子装一升啤酒.This bottle holds one liter.这个瓶子装一升....

liter的音标：liter的英式发音音标为：['li:tə(r)]liter的美式发音音标为：['litɚ]...

n.[计量] 公升（容量单位）...