It's often made of wood with sort of metal strips holding it, like that.

它通常是用木头制成的，上面有类似金属条的支撑，就像那样。

Have tons of vibration sensors all across the front and sides of their face which act very similar to a metal detector for us, more or less.

它们的正面和侧面都有量的振动传感器，这对我们来少类似于金属探测器。

In earlier centuries, doctors across Europe carried metal pomanders filled with similar mixtures, and it's possible that the beak evolved as a hands-free alternative.

在更早的几个世纪里，欧洲各地的医生都随身携带装有类似混合物的金属香烟，而且鸟嘴有可能演变为一种免提的替代品。