峠(とうげ)ridge, (mountain) pass, difficult part

選挙(せんきょ)戦(せん)の峠(とうげ)は投票(とうひょう)日(び)とその前日(ぜんじつ)だ。

The peak of the election battle is the voting day and the day before it.

医師(いし)：「峠(とうげ)を乗(の)り越(こ)えたら、容態(ようだい)が安定(あんてい)します。」

Doctor: 'Once we get over the worst, the condition will stabilize.'

山登(やまのぼ)りの峠(とうげ)を越(こ)えたので、ここからは下(くだ)りです。

Since we've passed the mountain's peak in our climb, it's all downhill from here.

財政(ざいせい)危機(きき)の峠(とうげ)は越(こ)えたが、国民(こくみん)の生活(せいかつ)は苦(くる)しいままである。

The fiscal crisis has passed its peak, but the people's lives remain difficult.

峠(とうげ)の茶屋(ちゃや)で一休(ひとやす)みしましたが、全身(ぜんしん)に溜(た)まった登(のぼ)りでの疲(つか)れが取(と)れません。

I took a break at the teahouse on the pass, but I couldn't shake off the fatigue from the climb that had accumulated throughout my body.