The subject of rock 'n' roll has been controversial and a source of conflict between parents and children ever since it first appeared on the scene in the mid 1950's.

自从二十世纪五十年代中期诞生以来，摇滚乐就一直是父母和孩子之间冲突的原因之一。

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If there are hundreds of magnets in each set, parents might not notice that a few roll away.

CNN: Powerful magnets in toys raise risks from swallowing

To address that concern, Firefly plans to roll out an insurance plan this summer, allowing parents to pay a small monthly premium to protect against loss.

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Shadow social security spokesman David Willetts told the meeting that while the Tories' plan to roll together various existing benefits and abolish the new deal for lone parents in order to give pensioners a straight increase had great virtue in its simplicity.

BBC: Going for grey