dig three feet deep 他们深翻沙坨，挖地三尺。 这对植被退化的沙坨是毁灭性的。
They dug three feet deep, doing devastating damage to the dunes, where vegetation was already deteriorating.
从储层基本特征入手，对胜坨油田胜二区沙河街组沙二段岩石矿物特征、储层物性特征、孔隙结构特征进行了系统的研究。
Rock mineral property, reservoir physical characteristics and pore structure feature in Es 2 of Sheng 2 area in Shengtuo oil field are studied systematically based on reservoir basic features.
沙四上亚段沉积时期，胜坨地区存在两个不同的物源体系，即坨94断层上升盘物源和胜北断层上升盘物源。
The results indicate that there were two different provenance systems during the deposition of the upper Es 4 :one on the upthrow of the Tuo94fault and the other on the upthrow of the Shengbei fault.
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