事实证明，调整美国的签证政策比治愈欧洲大学的更深层次的硬伤可能更加容易。
It may prove easier to fix America's visa policy than to cure the deeper-seated problems of Europe's universities.
这是有益的调整，但还需要一些更深层的改变。
首次提出在深层高压低渗油藏采用分支井技术降低钻井成本、提高开发效益的调整手段。
A new adjustable way was developed first time which use cluster well to decrease drilling cost and increase benefit in deep imbedded, low permeability, high pressure reservoir.
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