这里是排水区。
You also need a place that has a good drainage area.
你也需要一个地方，有一个好流域。
It is very important to construct Pearl River drainage area economic belt.
珠江流域经济带的建设意义重大。
This small drainage area will not be influenced by the Siberian cold current.
流域不会受到西伯利亚寒流的影响。
The area has good natural drainage.
这个地区有良好的天然排水系统。
This area was very marshy before the drainage system was installed.
在疏竣工程安置前，这区域是象湿地样的。
This area was very marshy before the drainage system was installed.
在疏竣工程安置前，这区域是象湿地样的。
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