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Precedents confirm the slowness and difficulty of the process .

历史上的先例证实了这一过程的缓慢和困难。

Washington has also initiated cases with an eye to establishing useful precedents .

美国政府提起诉讼时还着眼于确立有用的判例。

But the precedents set should still worry the us .

但美国仍将为之前的无人机袭击活动而担忧。

There are precedents for such a growth spurt .

这种爆发式增长是有先例的。

Easterbrook has set two important precedents for the restaurant industry .

伊斯特布鲁克为餐饮业开了两条重要的先例。