提示：点击例句中的单词，就可以看到词义解释

She endeavoured to stir , but it was useless .

她竭力想挪动一下，但是没有用。

We have endeavoured to make the vehicle environmentally friendly .

我们尽力使车辆不污染环境。

They have endeavoured together to preserve the country 's sunni creed and its doctrinal orientations .

他们一起努力维护该国的逊尼派的信仰教条和理论方向。

He endeavoured to adopt a positive but realistic attitude .

他力求采取一种积极而又现实的态度。

And he sometimes endeavoured to do without sleep , on one occasion trying to live on four hours sleep a night for a fortnight .

他自己还尝试过尽量不睡觉，比如有一次他试着在两周的时间里每天只睡四小时。