The wooden covers protected the pages, which were now made from a material called parchment, made from animal skins.

木质封面可以保护书页，而当时的书页是由一种叫做羊皮纸的材料制成的，这是动物的皮。

Shutter shutters are wooden or metal covers in front of a window.

百叶窗是窗户前面的木制或金属盖。

Julian removed the old wooden cover and then the children could see down the well-hole.

朱利安取下旧木盖，孩子们就可以看到井孔下面了。

Dick slipped aside the old wooden cover of the well and helped Anne down the ladder.

迪克溜到井的旧木盖上，扶着安妮下了梯子。