希尔伯特第二十一问题 hilbert's twenty-first problem
科罗拉多河流域干旱已进入第十一个年头，凤凰城的这种依赖可能很快就会变成一个严重的问题。
As the Colorado river Basin enters the eleventh year of its drought, the city's reliance on the river may soon become a serious problem.
我的朋友，这些问题的答案将主导二十一世纪的风向，并将贯穿整个世纪。
The answers, my friends, will be blowing through and creating the winds of the twenty-first century.
温格认识到范佩西易于受伤，因此当荷兰人十一月因脚踝问题缺席后，同情之势也有所缓和。
Sympathy for the harm done by the loss of Robin van Persie to ankle trouble in November is tempered by the recognition that Wenger knew the Dutchman was injury prone.
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