N-COUNT The diameter of a round object is the length of a straight line that can be drawn across it, passing through the middle of it. 直径 [also 'in' N]
...a tube less than a fifth of the diameter of a human hair.
…一根直径不到头发五分之一的微管。
Not the radii but I will give you the diameters of these ball bearings.
不是半径，而是这些滚珠的直径。
These aging stars have expanded to many times their original diameters and cooled.
这些古老恒星的直径较最初扩大了许多倍，并且已经冷却。
The Minnan people also built some of the largest tulou, with diameters of nearly a tenth of a mile.
一些比较大的土楼也是由闽南人建的，直径大概有160米左右。
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