sandbed

常见例句

Second, and more importantly, it causes a thin and very active layer of algae, plankton, bacteria, and other forms of life to develop on the surface of the sandbed.
其次，最重要的是，它形成了一個很薄竝且很活躍的層，這個層是由藻類、浮遊生物、細菌以及其他能夠在沙子表麪繁衍的生命形式。
4 ) When I saw my snails line up to spell "Help!" in the sandbed.
看見螺在沙子上畫出了“救命！”的字樣。
Sandbäck
桑德貝尅