The regularity and parameter of surface movement aroused by mining under thick soil layer and thin base rock have its obvious characteristic and regularity.

厚松散层薄基岩下开采引起的地表移动规律及地表移动参数，有其明显的自身特点和规律。

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Burst housing bubbles have revealed how thin the tax base is.

住房泡沫破灭已经凸显了税收底子有多薄。

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Compared to the behemoth task of manually upgrading a user base with a locally installed application, the effort required to upgrade users with a thin client application is minimal.

相对于本地安装的应用程序需手动为用户群进行升级的巨大工程而言，利用瘦客户应用程序为用户升级的工作量要少得多。

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But plenty of medicine has only a thin base in scientifically reviewed evidence, meaning that the opinions, judgments and prejudices of individual doctors often determine how treatment is given.

ECONOMIST: Restarting hearts

That thin evidence base made the European agency reluctant to approve the drug initially.

MSN: European regulators back first gene therapy drug

But, given its thin financial base, the company would be unwise to aim to be a force in every market that deregulates.

ECONOMIST: Leading from the front