青年中文spans的意思
spans中文翻譯：
n.[建]跨度；一段時間（span的復數）
v.跨越；持續；貫穿（span的第三人稱單數）
attention spans───[心理]注意廣度；注意力的持續時間
Travellers get from one side to the other by walking across a footbridge that spans a little stream.───旅游者通過一座橫跨小溪的人行橋從一邊走到另一邊。
Geographic isolation also can proceed slowly, over great spans of time.───地理隔離也可能在很長一段時間內進展都非常緩慢。
These episodes of rapid evolution are separated by relatively long static spans during which a species may hardly change at all.───這些快速進化的階段被相對較長的靜態跨度分隔開來，在此期間，一個物種幾乎不會發生任何變化。
Knowing about a particular instant or partial time snippet can be useful, but it's also often useful to be able to express spans of time.───了解特定的時刻或是某個局部時間片段將非常有用，但是如果能夠表達一段時間跨度的話，通常也很有用。
A brief section giving background information may be necessary, especially if your work spans two or more traditional fields.───對背景知識做一個簡要的介紹有時候也是必要的，特別是當你的研究領域涉及到兩個或更多方面的傳統領域。
Remember that anything rendered after you set a color uses the same color and that this spans over frames and will not be reset in-between.───當你在多帖之間，設置同一個顏色之后，它將不會自動重新設置。
There have already been some of these applicable to shorter time spans than I use in reporting to partners.───在比我向合伙人匯報的時間段更短的時期里，已經有了一些大范圍波動的情況。
A handful of researchers, however, think science will ultimately delay aging at least long enough to double life spans.───大量研究人員認為，科學將最終推遲變老速度，使人類壽命至少可以達到預期生命期限的兩倍。
The bridge spans over Qiantang River, as if it is a magnificent rainbow.───大橋如飛虹，跨錢塘江兩岸，頗為壯觀。
An old bridge spans the river just outside the town.
A bridge spans the river there.
The Brooklyn Bridge spans the East River from Brooklyn to Manhattan.
A robin's song spans less than an octave.
The time-scale involved is seldom measurable, but spans many generations.
A small bridge spans the arm of the river.
Young children have quite short attention spans.
The bridge, which spans the moat, is 140 feet long and 30 feet wide.
Her stage career spans sixty years.