交通在最繁忙的出行时段最为糟糕。

The traffic is worst during ___peak travel times.

航空旅行在夏季月份达到其高峰。

Air travel reaches its ___peak during the summer months.

她是一名正处于身体能力巅峰期的运动员。

She is an athlete at the ___peak of her physical abilities.