With difficulty he released the mattress from the metal frame, and groped beneath it.

他费了很大劲把床垫从金属架上卸下来，然后在下面摸索一番。

《柯林斯英汉双解大词典》

The metal frame of these luxurious umbrellas is not visible.

奢华的帕索蒂雨伞的金属伞架是从外观上看不见的。

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T-Bag sits across from Bob, now tied to the metal frame of the bunk bed.

Bob被绑在床铺的金属架上，T - Bag坐在他的对面。

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A hoop house is basically a metal frame covered with plastic or other all-weather material.

VOA: special.2009.12.22

By 7 a.m. all that remained of the building was a metal frame and some charred cinder blocks.

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The metal frame of their storm-chasing vehicle was twisted almost beyond recognition.

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"You're talking about panels that sit on a metal frame, " he added.

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