Yet the ocean's average depth is greater than 12 000 feet.

但海洋的平均深度超过12000英尺.

名作英译部分

West Lake is now 15 km in circumference, with an average depth of 1 . 8 meters.

西湖目前周长15公里, 平均深 1. 8米.

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The interfacial roughness is described quantitatively with average depth of sand pour method.

粘结面的粗糙度以灌砂平均深度定量描述.

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