knapsack

英式音标：[ˈnæpsæk]

美式音标：[ˈnæpˌsæk]

词语分类：TEM4,TOEFL

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概况：

n. 背包

词义：

n.

（士兵或旅行者的）背包；

变形

复数：knapsacks

英英释义

knapsack[ 'næpsæk ]

n.a bag carried by a strap on your back or shoulder

同义词：backpackback packpacksackrucksackhaversack

用法：

词组短语

knapsack problem[数]渐缩问题

双语例句

用作名词(n.)

After a short rest, they took up their knapsacks and went on.
休息了一会儿之后，他们又背起背包上路了。

Will my sweater go in your knapsack?
你的背包里还放得下我的球衣吗?

Do you think she got everything into her knapsack?
你认为她把所有一切都放进了她的背包里吗?

The moment he received the order, the soldier packed his knapsack.
士兵一接到命令就打了背包。

权威例句

Knapsack Problems

Knapsack-type cryptosystems and algebraic coding theory

Knapsack problems: algorithms and computer implementations

Knapsack problems: algorithms and computer implementations

The Theory and Computation of Knapsack Functions

White privilege: Unpacking the invisible knapsack.

A Genetic Algorithm for the Multidimensional Knapsack Problem

Fast Approximation Algorithms for the Knapsack and Sum of Subset Problems

A note on maximizing a submodular set function subject to a knapsack constraint

Beasley, J.E.: A Genetic Algorithm for the Multidimensional Knapsack Problem. Journal of Heuristics 4, 63-86

同义词：pack,duffel bag,backpack

英语词源：

knapsack

knapsack: [17] The -sack of knapsack is no doubt essentially the same word as English sack, but the knap- presents slightly more of a problem. The term was borrowed from Low German knappsack, and so probably knapprepresents Low German knappen ‘eat’ – the bag having originally been named because it carried a traveller’s supply of food.

knapsack (n.)

c. 1600, from Low German Knapsack (Dutch knapzak), probably from knappen "to eat" literally "to crack, snap" + Sack "bag" (see sack (n.1)).

造句：

1. knapsack abutments

反重桥台

-- 来源 -- 英汉 - 翻译参考[网络]

2. knapsack station

背囊式电台

-- 来源 -- 英汉 - 短句参考

3. knapsack problem

渐缩|问题

-- 来源 -- 英汉 - 翻译参考[网络]

4. knapsack vector

背包矢量

-- 来源 -- 英汉 - 翻译参考[网络]

5. knapsack sprayer

背负式喷雾器

-- 来源 -- 英汉 - 翻译参考[网络]

6. | pneumatic knapsack

背负式气力喷雾器

-- 来源 -- 英汉 - 翻译参考[网络]

7. knapsack algorithm

渐缩算法

-- 来源 -- 英汉 - 短句参考

8. motorized knapsack

背负式机动喷雾器

-- 来源 -- 英汉 - 翻译参考[网络]

9. knapsack duster

背负式喷粉器

-- 来源 -- 英汉 - 翻译参考[网络]

10. knapsack seeder

背负式播种机

-- 来源 -- 英汉 - 翻译参考[网络]