但民族主义同时又是一把双刃剑，我们应理性地看待它。

But nationalism is also a double-edge sword, so we must treat it in reason.

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回想一下，在有梭织机上，梭子每穿过一次梭口，便引入一根纬纱。另外还有占地限度问题，因为单剑杆的长度至少应等于织机的宽度。

Recall that the shuttle loom lays a filling yarn with every pass through the shed. There are also space limitations, since the single rapier must be at least as long as the loom width.

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较大的儿童应量耳垂到鼻梁再到剑突的长度。

For the older child measure from earlobe to bridge of nose to xiphoid.

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