Singing demands neurological sophistication and physical stamina and is thus a good signal of what fine mates (and bad opponents) they would make.

鸟儿的鸣叫需要复杂的神经系统和良好体力的配合，因而能很好地显示出它们会是多么优秀的配偶（强有力的竞争对手）。

youdao

LIKE many people, birds sing to show off. Singing demands neurological sophistication and physical stamina and is thus a good signal of what fine mates (and bad opponents) they would make.

跟很多人一样，鸟用鸣叫来炫耀自己。鸟儿的鸣叫需要复杂的神经系统和良好体力的配合，因而能很好地显示出它们会是多么优秀的配偶(强有力的竞争对手)。

youdao

Lack of good study habit, stamina and effective study methods also caused their negative attitude and fear to mathematics.

加上没有形成良好的学习习惯和意志力，没有掌握有效的学习方法，造成对数学望而生畏或无动于衷的消极心态。

youdao

But if this strategy is going to work, Dole needs more than good trainers and stamina.

CNN: Elizabeth unplugged

Although hybrid vigour can produce good hooves, plenty of stamina and a hardy disposition, it can also lend itself to other traits, such as recalcitrance.

ECONOMIST: The West��s wild horses

Because there, when I'm walking, and exercising, really helps to build my lungs, so my stamina is really, really good, more than anything.

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