What's the dominant in the text is just the stuff, the stuff in his knapsack listed with as little implication as possible.

主题占支配地位，重要的是那些在背包里几乎没有任何含义的东西。

耶鲁公开课 - 文学理论导论课程节选

I can see a wine bottle in your backpack.

我在你背包里看到一个葡萄酒瓶。

记忆犹新的表演 - SpeakingMax英语口语达人

So we put one item in the backpack 9 and we've got a value of 9.

所以我们在背包里放一件物品,而它的价值是。

麻省理工公开课 - 计算机科学及编程导论课程节选