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The pupil always dallies over difficult math problems .

这个学生做数学难题总是慢慢吞吞。

She dallies over her work and rarely finishes it .

她工作吊儿郎当，很少能把工作做完。

He always dallies over tasks that he doesn 't like doing .

对不喜欢做的事，他总是磨磨蹭蹭。

If nokia dallies it may be left behind by rivals who are already launching cheap tablets .

要是诺基亚漫不经心，那些已推出廉价平板电脑的对手就会将其甩在身后。