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In lamina of shale which deposited in deep lake away from paleo-debouchment in the Shahejie Formation in the Jiyang Depression, some aeolian silty sand was discovered.

该油页岩呈深灰色或棕褐色 ,页 ,主要富含有纹层和浅灰色钙纹层形成的毫米级沉积层偶组成。

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on a farm, on a large scale, on a regular basis, on a small scale, on account of, on account to, on all fours, on an equal base with, on an even keel, on and off,

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3G, 401(K), a,

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动物逻辑学

Long and strong toe bones, similar  to those found in modern shorebirds, suggested they have the ability  to walk in muddy or silty soil.

壮的脚趾骨,类似于现代鸟的脚趾骨,表明它们有泥泞或淤泥土壤中行走。

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on display, on duty, on earth, on end, on file, on fire, on foot, on guard, on guard against, on hand,

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3G, 401(K), a,
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