Testing of rotating machines like gears, engines and complete cars is a demanding task.
对旋转式机器例如齿轮、发动机和完整的汽车进行测试是一件颇为艰难的任务。
The more neurotic subjects were significantly more likely to choose feeling worried before a demanding task; non-neurotic subjects chose other emotions.
更神经质的人明显的倾向于接受艰巨的任务而选择担惊受怕，而非神经质的人则选择其他感兴趣的任务。
The parrots were given the intellectually demanding task of pulling a snack on a string up to their beaks, using a co-ordinated combination of claws and beak.
鹦鹉们被分派了一项对智力要求很高的任务，它们要协调爪子和喙，将一份拴在绳子上的零食拉到它们的喙上。
Though coordinating eight separate arms might seem a tricky task for an octopus brain, what's really demanding is controlling the arms' flexible, infinitely variable movements.
虽然让八条不同的触手协调动作，对章鱼的大脑而言，似乎是一项很需要技巧的活儿，但真正的困难在于如何控制触手那些柔韧的、变化无穷的动作。
"We were human beings carrying out a very demanding task," he says. "we had to improvise."
“我们只是执行艰巨任务的普通人，”他说，“我们必须随机应变。”
I nonetheless promised that I would do my very best to accomplish a task which was, for me, as demanding and difficult as any I had ever contemplated.
但是我承诺会竭尽全力完成任务。这项任务对我来说比之前遇到的更具挑战更艰难。
I nonetheless promised that I would do my very best to accomplish a task which was, for me, as demanding and difficult as any I had ever contemplated.
但是我承诺会竭尽全力完成任务。这项任务对我来说比之前遇到的更具挑战更艰难。
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