每一颗珍珠上有一个箭头。

Each pearl has an arrow on it.

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十二个门是十二颗珍珠。每门是一颗珍珠。

The twelve gates were twelve pearls, each gate made of a single pearl.

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不过屋顶上却铺着黑色的蚌壳，它们随着水的流动可以自动地开合。这是怪好看的，国为每一颗蚌壳里面含有亮 晶晶的珍珠。随便哪一颗珍珠都可以成为皇后帽子上最主要的装饰品。

The roof is formed of shells, that open and close as the water flows over them. Their appearance is very beautiful, for in each lies a glittering pearl, which would be fit for the diadem of a queen.

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