最新的谜题是过氧化物，这是一种氧分子，它可以与一些光敏蛋白质化合，在眼球中形成一个罗盘，让鸟儿们可以看到地球的磁场。
The latest piece of the puzzle is superoxide, an oxygen molecule that may combine with light-sensitive proteins to form an in-eye compass, allowing birds to see Earth's magnetic field.
下图中，你可以看到这台磁性共振成像仪的重达32吨的磁铁被放置在一个250吨重的大铁壳内，而后者以后将担当起保护周围空间不受强磁场影响的责任。
Below you can see the MRI's 32 ton magnet positioned inside a cage of steel weighing 250 tons which will, in the future, be used to protect the surrounding area from the magnetic field.
下图中，你可以看到这台磁性共振成像仪的重达32吨的磁铁被放置在一个250吨重的大铁壳内，而后者以后将担当起保护周围空间不受强磁场影响的责任。
Below you can see the MRI's 32 ton magnet positioned inside a cage of steel weighing 250 tons which will, in the future, be used to protect the surrounding area from the magnetic field.
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