extremes meet

(proverb)opposite extremes have much in common

(谚)两极亦有相逢时（相反的两极端之间有许多共同点）

go (或 take something) to extremes

take an extreme course of action; do something to an extreme degree

（让…）走极端

they took a commendable anti-ageist policy to extremes.

他们将反年龄歧视这一值得称赞的政策推向了极致。

in the extreme

to an extreme degree

极端，极度；非常

the reasoning was convoluted in the extreme.

这一推理让人极为费解。