单词lower-depths
网络: 深渊
Warm surface temperatures and upwellings and downwellings cause the plankton to descend to lower depths, out of reach of surface-feeders.
升高的水面温度、上升水流和下降水流使浮游生物下沉到更深的地方，在水面捕食的动物已无法触及。
Hardy Utai brave the lower depths of the sinkhole grotto to use the water pools found there as a basis of aquacultural fields.
这些强壮的尤塔人探索了灰岩坑洞穴底部的水池，发现它们可以作为水产养殖的基地。