自2010年至今的四级考试中， 共出现过 次
自2010年至今的六级考试中， 共出现过 次
N-COUNT 间隔;期间 A span is the period of time between two dates or events during which something exists, functions, or happens.
The batteries had a life span of six hours...
这些电池的寿命为 6 小时。
Gradually the time span between sessions will increase.
N-COUNT (注意力的)持续时间 Your concentration span or your attention span is the length of time you are able to concentrate on something or be interested in it.
His ability to absorb information was astonishing, but his concentration span was short...
Young children have a limited attention span and can't concentrate on one activity for very long.
VERB 持续;跨越;贯穿 If something spans a long period of time, it lasts throughout that period of time or relates to that whole period of time.
His professional career spanned 16 years...
他的职业生涯持续了 16 年。
The film, spanning almost a quarter-century, tells the story of Henry Hill...
VERB 包括;遍及 If something spans a range of things, all those things are included in it.
Bernstein's compositions spanned all aspects of music, from symphonies to musicals.
...a remarkable man whose interests spanned almost every aspect of nature.
N-COUNT 宽度;宽幅 The span of something that extends or is spread out sideways is the total width of it from one end to the other.
It is a very pretty butterfly, with a 2 inch wing span...
这是一只非常美丽的蝴蝶，翼展 2 英寸。
It may be that you are unaware of where your hip joint is; it is not at the waist but a good hand span below it.
VERB (桥等建筑物)横跨，跨越 A bridge or other structure that spans something such as a river or a valley stretches right across it.
Travellers get from one side to the other by walking across a footbridge that spans a little stream.
...the humped iron bridge spanning the railway...