n. 1.长，长度，长短。 2.(时间的)长短，期间。 3.(赛艇的)一艇的长度；一马的长度。 4.程度，范围。 5.【板球】球程；投至适当距离的球。 6.【语言学】音长。 7.一段，一节。 短语和例子 a dress length, a length of cloth 一段料。 a length of pipe [tubing] 一节管子。 The boat won by three lengths. 这只艇以三艇长之差得胜。 a (good) length ball 球程准确的球。 at arm's length 在手臂伸得到的地方，疏远 (keep sb. at arm's length 不与接近，敬而远之)。 at full length 1. 冗长地；充分地，详细地 (give all the facts at full length 提供详细的材料)。 2. 全身平伸地 (lie at full length 挺直身体躺着)。 at great length 冗长地，??唆唆地。 at length 1. 最后，终于，好容易才。 2. 充分地，详细地 (speak at great length 详细讲了好久)。 at some length 相当详尽地。 cannot see beyond the length of one's nose 鼠目寸光。 draw out to a great length 拖得很久，占去很长时间。 fall [measure] all one's length 直挺挺地倒下。 find [get, have, know] the length of sb.'s foot 了解某人的弱点。 go (to) all lengths [any length] ＝ go to great lengths 什么事都做得出；不遗余力。 go (to) the length of (doing) 甚至于，不惜。 go the whole length of it. 彻底干；干到底。 length of (sb.'s) days [life] 某人的寿命。 measure one's (own) length 跌倒在地。 of some length 相当长。 over [through] the length and breadth of 到处，四面八方。 work at arm's length 在不利的条件下工作。
a section of something that is long and narrow; "a length of timber"; "a length of tubing"
continuance in time; "the ceremony was of short duration"; "he complained about the length of time required" 同义词：duration,
the linear extent in space from one end to the other; the longest dimension of something that is fixed in place; "the length of the table was 5 feet"
size of the gap between two places; "the distance from New York to Chicago"; "he determined the length of the shortest line segment joining the two points" 同义词：distance,
the property of being the extent of something from beginning to end; "the editor limited the length of my article to 500 words"
In geometric measurements, length is the longest dimension of an object.Princeton.
例句与用法
1.
At length i fell into some broils . 最后我终于遭到了一场小小的风波。
2.
He is always ready to talk at length . 他一有机会就长篇大论讲个没完。
3.
At length they came within sight of the castle . 他们终于看见城堡了。
4.
You must measure the length by rule and line ... 你必须准确地计量长度。
5.
The si unit for length is the meter, m . 长度的SI单位是米（m）。
6.
Give me a piece of rope ; any length will do ... 给我一根绳子，多长都行。
7.
He stormed the length of the room and back . 他气冲冲地在房间里走来走去。
8.
He fished a length of string out of his pocket . 他从口袋里掏出一条绳子。
9.
He recited his own sufferings at full length . 他详尽地叙述了自己的苦处。
10.
A book is not judged only on its length . 不能只根据篇幅长短来评价一本书。
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