sediment movement的用法和樣例：
例句
- When flow velocity decreases below the corresponding incipient motion condition, no sediment movement occurs.
當水流速度小於相應的起始運動時，將無泥沙運動。 - The physical pattern of sediment exchange and bed coarsening simulation was put forward, and long-term data on hydraulic-dynamics and sediment motions were modeled.
提出了泥沙交換和河床粗化計算模擬的物理圖案，對長系列水動力和泥沙運動進行了模化處理。
