| [/spæn; spæn/] n 用法:
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. 用法:
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. 用法:
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 2
(-nn-) v [Tn] 用法:
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. 用法:
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. 用法:
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 3
[/spæn; spæn/] adj (idm 习语) spick and span => spick. |