and greenbelts的意思|示意

Later, once the advancing deserts were halted, smallholders started harvesting and selling lumber for a living, while keeping the sheltering greenbelts in place.

后来，治沙取得成功，小农开始以采收和销售木材作为生计，同时维护绿色防护带。

Besides the simple arbor layer, the multilayer plantation structure should be adopted in order to enhance the ecological benefits and scene values of isolating greenbelts in Beijing.

为提高城市隔离片林生态效益及景观面貌，片林结构除简单的乔木层外，还应具有一定面积的复层混交种植结构。

Major systems commonly include bypass tunnels, greenbelts, and roads which are used to handle the runoff which exceeds the capacity of the minor drainage system.

大型系统通常包括旁路通道，绿化带和道路，用来处理超过小型排水系统处理能力的径流。