| 单词 | span |
| 释义 | span noun¹ 1length长度adjective➤full全长▸➤broad, wide范围广泛◆a broad span of interests兴趣广泛➤clear净跨径◆the bridge has a clear span of 120 feet.这座桥净跨径为 120 英尺。➤15-foot, 500-metre/500-meter, etc. * 15 英尺、500 米等跨距▸➤wing (usually wingspan) 翼幅◆the bird has a three-foot wingspan.这只鸟的翼幅为 3 英尺。span noun² 2length of time时间adjective | verb + span | preposition | phrases adjective➤long长时间▸➤brief, short短时间▸➤ten-day, two-week, etc. * 10 天、两周等时间▸➤entire整个时间▸➤allotted分配的时间◆the speech continued well beyond its allotted span.这个讲话大大超过了原定的时间。➤natural (especially bre) 自然寿命◆to prolong life beyond its natural span延年益寿➤time时间长度▸➤life (usually lifespan) 寿命◆the average lifespan of an american is 75 years.美国人的平均寿命是 75 岁。◆the expected life span for boys born in the us在美国出生的男孩的预期寿命➤attention, concentration, memory注意力持续时间；记忆保持时间◆he has a short attention span.他注意力集中的时间很短。◆a limited attention span有限的注意力持续时间verb + span➤cover跨越时间段◆the book covers the entire span of arab history.这本书跨越了整个阿拉伯的历史。preposition➤over a/the span历时⋯◆developments were monitored over a span of two years.对开发的监控持续两年。phrases➤a span of time, a span of years时间的／年份的跨度span(-nn-) [transitive] to stretch right across sth, from one side to the other横跨；跨越◆a series of bridges span the river.一系列桥梁横跨河面。◆the roof was spanned by curved ribs of steel.屋顶上架着钢制肋拱。▸ span noun [countable] ◆the bridge crosses the river in a single span.那条河上的桥是单跨桥。span [countable] the length of time that sth lasts or is able to continue持续时间◆i worked with him several times over a span of six years.六年之中我和他共事过几次。◆this textbook covers the entire span of arab history.这本教科书涵盖了整个阿拉伯的历史。◆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。spannoun [countable] ◆the bridge crosses the river in a single span.那条河上的桥是单跨桥。spannoun [countable] ◆the bridge crosses the river in a single span.那条河上的桥是单跨桥。span¹/spæn ||; spæn/noun[c] 1. the length of sth from one end to the other 跨度；跨距: ◇the wingspan of a bird 鸟的翼展 2. the length of time that sth lasts or continues 持续的一段时间: ◇young children have a short attention span. 小孩子不能长时间集中精神。 span²/spæn ||; spæn/verb [t] (spanning;spanned) 1. to form a bridge over sth 架桥 2. to last or continue for a particular period of time 持续spansee ⇨ include/not include 2 • • •• ⇨ attention span• ⇨ spick and span☞ span¹☞ span² |
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