新生儿的头盖骨不是成型的——但是由五块分离的骨头组成，当成熟时，它们会融合在一起。
Newborns' skulls are NOT solid - but are made of five separate plates of bone that fuse as they mature.
这座由日本人设计，全球第二高的摩天大厦，看起来像个巨大的开瓶器，或是未成型的滑雪板。
Depending on where you stand, the Japanese-designed tower, the world's second tallest, looks like a giant bottle opener or a knife slicing the foggy skies.
这一说法的确切成型时间为1783年，是由地质学家米歇尔提出的。
The actual concept of an object so massive that light could not escape was suggested in 1783 by the geologist John Michell.
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