And there is overlap, the experts point out: a child who misses a great deal of school for reasons that look like truancy may become increasingly anxious - and embarrassed - about going back.

专家们指出，这些行为也有重叠：一个因为各种原因赖学很严重的孩子，或许会变得日渐焦虑- - -并且对返回学校感到尴尬。

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But from then on it was one-way Blues traffic, as first Sweeney, then Halfpenny twice - the full-back providing the overlap first on the right then the left wing - Rhys Thomas, Gareth Thomas and Maama Molitika all followed the procession to the try line.

BBC: Blues 58-0 Connacht

Young stand-off Sam Tomkins created an overlap for full-back Cameron Phelps to get winger Roberts over for Wigan's third try on 51 minutes and it appeared the game was up.

BBC: Wigan 18-12 Castleford

The ball was spread across the back-line with a huge overlap awaiting the eager Jones, but the final pass was behind the wing, and after gathering he barely sneaked over the line, his try finally awarded by the television match official.

BBC: Scarlets 22-29 Harlequins