音标：[spæn]
n. 指距, 全长, 跨距, 一段时间, 小范围
vt. 以手指测量, 跨越, 架设, 持续
【化】 跨度; 跨距
【医】 斯潘, 司盘(山梨醇脂肪酸酯,乳化剂和去污剂); 跨距(约九英寸)
【经】 幅度
在线英汉词典
span的短语、例句：
span
n
1 distance or part between the supports of an arch or a bridge 跨度, 跨径, 跨（拱或桥支撑物之间的距离或部分）
The arch has a span of 60 metres. 那个拱的跨度为60米.
The bridge crosses the river in a single span. 河上那座桥是单跨桥.
2 length of time over which sth lasts or extends from beginning to end （某事物）自始至终的持续时间或期间
the span of life 一生的时间
a short span of time 短暂的一段时间
over a span of six years 六年期间
have a short concentration span, ie be capable of concentrating for only a short period of time 不能长久集中注意力.
3 (dated 旧) distance from the tip of the thumb to the tip of the little finger when the hand is stretched out; about 23 centimetres (9 inches) 乍, 一乍宽（手掌张开时拇指尖与小指尖的距离, 约 23 厘米或 9 英寸）. span (-nn-) v [Tn]
1 form a bridge or arch over (sth); extend across 建造跨越（某物）的桥或拱; 横跨
The river Thames is spanned by many bridges. 泰晤士河上有很多桥.
2 extend over or across (sth); stretchacross 跨越, 穿越（某事物）; 贯穿
(fml 文) His knowledgespans many different areas. 他的知识广博遍及许多领域.
Her life spanned almost the whole of the 19th century. 她的一生几乎经历了整个 19 世纪.
3 stretch one´s hand across (sth) in one span 将手指作一乍状跨於（某物）上
Can you span an octave on the piano? 你一乍能按到钢琴的八个键吗? span adj (idm 习语) spick and span => spick.
span