He bought a leather case in Cairo.

他在开罗买了一个皮箱。

The binoculars are in that leather case.

双筒望远镜在那皮箱里。

His case is made of real leather or he has a real leather case.

他的箱子是真皮做的或他有一个真皮皮箱。

All the bits fitted into Grout's Wonderful Bag, a leather case.

所有部件都可恰到好处地装入奇妙袋，也就是一个皮套。

But what was in this leather case, it seemed, had been left for him to use.

不过皮包里现有的东西，看起来，已经够他用的了。