cu.bit
n.（名词）An ancient unit of linear measure, originally equal to the length of the forearm from the tip of the middle finger to the elbow, or about 7 to 22 inches (43 to 5' centimeters).肘尺：古代的一种长度测量单位，以前等于从中指指尖到肘的前臂长度，或约等于7至22英寸（43至5'厘米）
来源：Middle English cubite 中古英语 cubite from Latin cubitum [cubit, elbow] 源自 拉丁语 cubitum [前臂，肘]
