Experiments indicate that the newly developed material of roll-sleeve meets the requirements of high speed roll casting technology, can give strong backing to utmost roll-casting technology.

通过对材料的检测分析与工艺实验，证明研制出来的材料的综合性能优良，为极限铸轧技术的应用提供了有力支持。

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The most dangerous of these views come from those who would roll back the progress of NCLB, backing away from its demands that all children be given the opportunity to learn and achieve and that schools be held accountable for student success.

FORBES: U.S. Rep. Howard P. McKeon

Morales vows to roll back eradication efforts in Bolivia and de-criminalize the coca leaf, though he's backing a zero cocaine policy.

NPR: Ceremony Precedes Bolivian President's Inauguration