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单词 soil layer
释义

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soil layer
soil layer n.
ΚΠ
1911 Encycl. Brit. XXV. 351/2 The general evidence indicates that the specific bacteria of cholera discharges are capable of a much longer existence in the superficial soil layers than was formerly supposed.
1964 W. C. Putnam Geol. x. 249/2 Soil layers and particles may be lifted up by the expansion of freezing water.
1968 R. W. Fairbridge Encycl. Geomorphol. 416/1 On top of this [sc. the lithosphere] the continents have an additional soil layer or pedosphere with a depth generally of only 1–2 meters.
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