span

n.
1. distance from the tip of the thumb to the tip of thelittle finger of a spread hand,handbreadth一拃(手伸开，拇指尖至小指尖之间的距离)。
△As.3.2.140 (131):“That the stretching of a span / Buckles in his sum ofage；” i.e.Such a small distance encloses the whole ofa man's life. (cf.Psalms 39; 5:“Behold. thou hast made my days as it were a span long.”) 只要伸出一只手掌那么宽，就可把握了人的一生。(参见《诗篇》第39章第5节：“你使我的年日，窄如手掌。”)
2. hand's-breadth,(fig.) briet stretch of time,shorttime一手之宽，一拃；（比喻）一小段时间，短暂时间。
△Oth. 23.74 (71): “A soldier's a man; / O man's life's but a span；”当兵的是好汉；啊，人生一世太短暂。

span[spæn]

n.跨度，广度，指距v.跨越
◇ over a span of经过…的时间
‖ akimbo span肘间距
apprehension span理解广度
arch span拱跨
central span中心距
clear span净跨
history of span历史跨度
side span边跨
span of attention注意广度
span of comprehension理解广度
span of consciousness意识广度
span of control管辖范围，控制广度
span of immediate memory瞬时记忆广度
span of knowledge知觉面
span of memory记忆广度
span of perception知觉广度
span of supervision督导范围
suspended span悬跨
time span时间间隔
spanless adj. span-new adj.崭新的