Instead of just piling the oysters up close to the riverbed, as had been done in the past, they built reefs of various heights above the bed for them to grow on.
他们没有按照过去通常的作法仅仅将牡蛎在靠近河岸处一层一层地摞起来，而是在河床上建造了高度各异的(供牡蛎生长的)牡蛎礁。
A single ger (or yurt, tiny white dot at top left)stands along a dirt road near the broad riverbed of the Tuul River in a remotearea of Mongolia, seen from above via Google Earth.
从Google Earth上俯瞰，蒙古偏远地区土拉河宽广的合唱边的蒙古包（左上角的白点）。
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