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(mountain) pass; highest point on a mountain road; ridge
peak (e.g. of summer); worst (e.g. of an illness); crisis; critical point; most difficult part
峠を越えると急に景色が変わりました。
The scenery changed after crossing the pass.
病気の峠を越えて回復に向かっている。
The illness has passed its peak and is heading toward recovery.
峠の茶屋で休憩をとることにした。
I decided to take a break at the tea house at the pass.