Bed planting and water management in the Yellow River: Serious water and soil erosion in the Yellow River has led to frequent basin-wide drought and floods.
黄河流域的垄播和水管理:黄河流域严重的水土流失导致整个流域经常发生水旱灾害。
M5 transparent bright LED: red, yellow, green, white and blue.
M5透明超亮发光二极管:红色,黄色,绿色,白色,蓝色。
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