| 释义 |
- n.跨度；范围；宽度；持续时间
- v.跨越；横跨；持续；贯穿
- 网络Surgical Path Assisted Navigation System；司盘类；礅距
复数：spans 过去分词：spanned 现在分词：spanning v. cross,cover,extend over,bridge,traverse n. distance,width,length,extent,area 1. | 持续时间the length of time that sth lasts or is able to continue |
| I worked with him over a span of six years. 我和他共事达六年之久。 | | The project must be completed within a specific time span . 这项工程必须在规定期限内完成。 | | Small children have a short attention span . 幼儿注意力持续时间短。 |
2. | ~ (of sth) 范围；包括的种类a range or variety of sth |
| Managers have a wide span of control. 经理的职权范围很大。 | | These forests cover a broad span of latitudes. 这些森林绵延在多个纬度上。 |
3. | （桥或拱的）跨径，跨度，跨距the part of a bridge or an arch between one vertical support and another |
| The bridge crosses the river in a single span. 河上的桥为单跨桥。 |
4. | 宽度；翼展the width of sth from one side to the other |
| The kite has a span of 1.5 metres. 风筝宽 1.5 米。 |
1. | ~ sth 持续；贯穿to last all through a period of time or to cover the whole of it |
| His acting career spanned 55 years. 他的演艺生涯长达 55 年。 | | Family photos spanning five generations were stolen. 一家五代人的照片失窃了。 |
2. | ~ sth 包括（广大地区）；涵盖（多项内容）to include a large area or a lot of things |
| The operation, which spanned nine countries, resulted in 200 arrests. 这次行动涉及九个国家，逮捕了 200 人。 |
3. | ~ sth 横跨；跨越to stretch right across sth, from one side to the other |
| a series of bridges spanning the river 架在河上的一系列桥梁 |
n. | 5. (常有短的涵义的)一段时间;很小的间隔;片刻,顷刻 6. 一拃〔手指张开时,拇指尖至小指尖的长度,通常九英寸〕 5. (常有短的涵义的)一段时间;很小的间隔;片刻,顷刻 6. 一拃〔手指张开时,拇指尖至小指尖的长度,通常九英寸〕 | v. | 2. 横跨,跨越,(桥)跨(在河上),架(桥在河上)弥补 7. (在水中)时浮时沉地向前游泳;(尺蠖)段段移进 2. 横跨,跨越,(桥)跨(在河上),架(桥在河上)弥补 7. (在水中)时浮时沉地向前游泳;(尺蠖)段段移进 |
n. | 1. the distance or expanse between two extremes or limits 2. a strip of rope that has been tied down at one end 3. the extent or space between abutments or supports, e.g. on a bridge or arch, or a portion of the structure that is supported in this way 4. the period of time during which a mental function or act can be maintained 5. a period of time, especially the lifetime of a person 6. an old measurement based on the distance from the end of the thumb to the end of the little finger of a spread hand, approximately 23 cm (9 in) 7. a pair of horses or other animals harnessed and driven together 8. the amount of time that something lasts 10. the differences included in something that you are considering or calculating 1. the distance or expanse between two extremes or limits 2. a strip of rope that has been tied down at one end 3. the extent or space between abutments or supports, e.g. on a bridge or arch, or a portion of the structure that is supported in this way 4. the period of time during which a mental function or act can be maintained 5. a period of time, especially the lifetime of a person 6. an old measurement based on the distance from the end of the thumb to the end of the little finger of a spread hand, approximately 23 cm (9 in) 7. a pair of horses or other animals harnessed and driven together 8. the amount of time that something lasts 10. the differences included in something that you are considering or calculating | v. | 1. to reach or extend over or across something 2. to lash or tie something 3. to measure something by or as if by the hand with fingers and thumb fully extended 4. to encircle or cover something with the hands, especially in order to estimate its size 5. to last for a particular period of time, especially a long period 6. to include the whole of an area 7. if a bridge spans an area of water, it crosses it 8. to include a number of different things 1. to reach or extend over or across something 2. to lash or tie something 3. to measure something by or as if by the hand with fingers and thumb fully extended 4. to encircle or cover something with the hands, especially in order to estimate its size 5. to last for a particular period of time, especially a long period 6. to include the whole of an area 7. if a bridge spans an area of water, it crosses it 8. to include a number of different things |
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