a great crested grebe凤头䴙䴘From all directions Winds bring petals of cherry Into the grebe lake.从各个方向,风带来鲜红的花瓣,把它吹向湖面.American grebe having a black - banded whitish bill .发白的嘴上有 黑色斑纹 的美洲?...
Abrupt fluid a permeable reservoir; gradational ones indicate a low permeability with a high capillary pressure.突变的流体界面表层储层具有很好的渗透率, 而渐变的流体界面表明储层的渗透率较差,且储层的毛细压力较高....
He hinted at the impossibility of winding up the work in two months.他暗示要在两个月内结束这项工作是不可能的.She gently explained the impossibility of a marriage between us.她有礼貌地解释了我们不能结婚的原因.We soon saw the impossibility of reaching the cit...
婴儿要是渴了，就会吃得更频繁。If a baby is thirsty, it feeds more often.他认为婴儿几乎就是毫无生命的物体。He thought of the baby almost as an inanimate object.婴儿吮吸时，会有更多的奶水流出来。As the baby suckles, a further supply of milk is generated....