knapsack

释义

n. 背包 knapsack problem [数]渐缩问题

例句

Squatting by one of the walls, I took a little book from my knapsack.

我蹲在胡同的墙根，从背包里拿出一本最近出版的小开本的书。

He unstrapped his knapsack, put it, with his stick, on the hedge-bank, and opened the gate.

他把背包从身上取下来，连同手中的棍子一起放在树篱坡上，把门打开了。