Books were just a commodity that had to be produced, like jam or bootlaces.

书本只不过是要生产的商品，就象果酱或鞋带一样。

The prisoner trails behind, his head bowed, bootlaces skipping along the ground.

囚犯紧随其后，头低垂，松散的鞋带一路蹦跶着。

He looked at me with an air of surprised disapproval, as a colonel might look at a private whose bootlaces were undone.

他用惊讶不赞成的空气看我，因为一位上校可能看鞋带被恢复原状了的一个二等兵。