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。
"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。”
All countries in the world should be fully aware of the pressing and demanding task of combating drugs and take concrete and effective measures to wipe out the evil.
世界各国都应该充分意识到反毒任务的紧迫性，要采取切实有效的措施扫除毒魔。
Checking the versions of Dream of the Red Chamber is a demanding task.
参校《红楼梦》是一件相当繁琐的事。
But many people find it a demanding task.
但是许多人发现这是一项艰巨的任务。
Visualization of large data sets is a complicated and demanding task.
大型数据集的可视化是一个复杂而艰巨的任务。
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。
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。
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