I think of an African penguin as absolutely tenacious.

我认为非洲企鹅非常顽强。

Be tenacious enough to not let the argument die.

要足够坚韧，不要让争论消失。

I know how tenacious Kate can be.

“我知道凯特可以有多么顽固。

He said young people should be optimistic and tenacious when facing adversities.

他表示，青年人在面对挫折时，要乐观向上，百折不挠。

When it comes to old-fashioned removal methods, they're troublingly tenacious.

说到老式的清除方法，它们的顽强程度令人不安。

Meanwhile outside, the military battles a tenacious group of rebel soldiers.

同时在外面军队同顽强的叛军士兵正展开激烈交战。

For an animal of his size, the wolverine is a tenacious predator.

对体型像它这样的动物来说，狼獾是个难缠的掠食者。

The plan could widen the rift between Israel and its tenacious backer.

该计划可能会进一步扩大以色列与其坚定不移的支持者之间的裂痕。

Humidification helps to soften crusts and tenacious secretions which block tracheobronchial tree.

湿化有助于软化堵塞气管的结痂和粘稠的分泌物。

This, coupled with thick tenacious secretions and crusts, may completely occlude the airway.

再加上厚厚的分泌物和伪膜，可能会完全堵塞气道。