姨妈绷紧的脸一下子松开了,她眼里突然闪现出慈祥的目光.The hard lines in his aunt's face relaxed and a sudden tenderness dawned in her eyes.我拼命拉住那根绷紧的缆绳,想把小艇拉过来.I gave one desperate pull at the taut tow - rope to bring the boat alongside.胖老头穿著...
充填在潜水面以下孔隙中的水不是静止的.The water that fills the pores below thewater table is not static.孔隙通道的 横截面 面积沿其长度方向变化.The cross - sectional areas of the pore openings vary along their length.通常白云石晶体构成格架,它有均匀分布的孔隙.Commonly the dolomi...