我们的门环是纯铜铸造的。

Our door knocker is cast in solid brass.

《柯林斯英汉双解大词典》

如果门环没了，我还可以用我的脚。

If the knocker is gone, I can still use my feet.

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全球变暖成为当今热门环保问题。

Global warming has become a hot environmental issue.

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30号有一扇红门和一幅铜门环。

Number 30 has a red door and a brass knocker.

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这位推销员猛拍门环。

The salesman pounded the door knocker.

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在史高基的门上有一个巨大的，金属的门环。

There was a big, metal door-knocker on Scrooge's door.

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二次离子污染是影响厦门环境空气质量的主要因子。

The pollution of secondary ions is the major influence factor for Xiaman air quality.

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正如所示，阀门环绕3英寸的锚缆索并实现完全的密封。

As shown, the valve seals completely around the 3 - inch mooring cable.

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正如所示，阀门环绕3英寸的锚缆索并实现完全的密封。

As shown, the valve seals completely around the 3 - inch mooring cable.

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