Doesn't have much stamina like he used to.

他难道体力不如以前了吗。

Sled dogs are notable for their stamina.

雪橇狗以其耐力著称。

I'm hoping it'll help me to build up my stamina, but it'll probably be a long haul.

我希望它能帮我增强耐力，但是这可能是一个长期的过程。

I'd like to have, yeah, I'd like to try and develop that stamina.

我想试试，我想改善一下耐力。

I may not have the stamina any more, but I still have the technique.

我可能耐力不行了，不过技能还在。

I got you. Their competitive edge lies mainly in endurance and stamina.

我明白了，他们的强项在于耐力持久。

So you can say, I am an active person, I enjoy outdoor activities to improve my stamina.

所以你可以说，我很活跃，我喜欢进行户外活动来改善自己的耐力。

A good fighter, Toyne, but he lacked stamina.

托因是个勇士, 但他缺乏耐力.

You get good lines, perhaps, but no stamina.

外表也许不错，但精气神儿就不行了。

It was grit. Grit is passion and perseverance for very long-term goals. Grit is having stamina.

是耐力，耐力是对长期目标的热情和坚持，耐力就是持久力。