The development and evolution of sea bottom sand ridges and sand ripples are discussed.
讨论了海底沙脊和沙波发育演变问题。
Sand on the bottom whiter than chalk
海底的沙子比白垩更白
The sand bailer is also used as a bottom hole sampler.
捞砂筒也可用作业井底取样器。
水底是干净的沙砾。
The sand in the water gravitated towards the bottom of the bottle.
海关官员拧开瓶盖，把瓶子放到鼻子底下。
The bottom layer is a mixture of sand and clay.
最下面的一层是沙和泥的混合物。
The bottom layer is a mixture of sand and clay.
最下面的一层是沙和泥的混合物。
应用推荐