求翻译：本次勘察控制最大深度为16.50米，拟建场地地层为双元结构组成，上部为第四系冲、洪积及残坡积地层，下部为中生界白垩系龙井组(K2L)泥岩及砂岩。地层比较简单，但基岩面起伏较大。是什么意思？

The survey control the maximum depth of 16.50 meters, the proposed site formation for the dual structure composed of red, the upper Quaternary alluvial and residual talus formation, the lower part of the Mesozoic Cretaceous Longjing group (k2l) mudstone and sandstone . Strata is relatively simple, b

This survey control the maximum depth of 16.50 meters, the proposed site for a two-layer structure of $4, the top of the hedge, and slope of the ground, and the Cretaceous to the health sector is in Longjing (K 2) mud L rock and sandstone. strata are relatively simple, bedrock is greater volatility.

This reconnaissance control greatest depth is 16.50 meters, plans to construct the location stratum for the binary cell structure composition, upside for fourth is flushes, Hong Ji and the remnant diluvial stratum, lower part for mesozoic Cretaceous system Longjing tea group (K2L) mudstone and sands

The survey and control the maximum depth is 16.5 m, site formation for the dual structure to be built, the upper fourth of rush and residual product and diluvial stratum and lower Mesozoic Cretaceous group of Longjing (K2L) of mudstone and sandstone. Formation is relatively simple, but the bedrock s

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