沙层的英文：
sand bed
n. 沙；沙滩
v. 用砂纸磨光；撒沙于；被沙堵塞
- They panned off the sand and dirt.
他们用淘金盘淘去砂泥。 - Sift gold from sand.
沙里掏金。 - Sand castle damages easily.
沙堡容易受到损坏。 - spit (sand spit)
沙嘴 - Many sands will sink a ship
积沙沉船
n. 床，睡眠处；睡觉；（海、河、湖等的）底部；苗床
v. 把...安置在；为…提供住宿（床位）；睡，卧
- Procrustean bed
逼人就范之物 - Bed rest is more like bed agony.
上床睡觉好象是种苦恼。 - It has bedded into the deepest crevices of the store.
它已钻进了店里最隐避的隙缝。 - change a bed;change the baby.
换床单；给婴儿换尿布 - She is in bed with an awful cold.
她得了重感冒而卧病在床。