时间:2022-10-10 20:40:15
【地质学;地理学】骨层。
bone: n. 1.骨(头);骨状物〔象牙等〕;骨制品;(食用的) ...
bed: n. 1.床,床铺;床位,铺;(动物的)窝;〔比喻〕安乐 ...
A bone bed is any geological stratum or deposit that contains bones of whatever kind. Inevitably, such deposits are sedimentary in nature.