英语语法分析

Any two diameters of a circle intersect each other.

圆周内两直径必相交。

《新英汉大辞典》

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。