When somebody invented the automobile, before you knew it everyone was driving automobiles and they all looked pretty much the same.
有人发明了汽车,不知不觉,每个人都开上汽车了,而且那些汽车外形看起来都差不多
It's able to do that because there are cells like this particular cell that have shapes that are suited to their function.
之所以这样是因为它的细胞像这个,染色细胞一样具有与功能相适应的外形
They have a slightly smaller body to them but violins and violas have the same general construction.
小提琴的外形比中提琴稍微小些,但它们的构造大体相同
Neurons actually look quite different from one another but this is a typical one.
尽管神经元的外形各不相同,但这是一个典型的神经元
There's a change in sort of the shape of the overall embryo as well.
与此同时,胚胎的外形,也有一定程度的变化
There's a cluster of cells here, there's a sheet of cells that forms an outer lining, and what is most noticeable is this cavity, this fluid filled cavity which begins to develop.
有一簇细胞,一层细胞构成了外形轮廓,最明显的结构就是这个空腔,这一充满液体的空腔开始发育形成
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