sand reef的用法和樣例：
例句
- The growth of these bars is limited by the depth at which waves will plunge and prevent further sand encroachment.
這些砂洲的生長僅限于波浪能衝進的深度，並且阻擋了外邊砂質物的進入。 - The sand carried outside the bar is spread out over the slope by the expanding head of the rip current.
從砂洲外面搬出去的砂質物，在急流的洶湧水頭作用下被展佈於整個斜坡上。
