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hey are all potential sources of groundwater of great significance。 例如砂岩和砾岩等沉积岩都是可以渗透的,它们都是重要的潜在地下水资源。
2。 Some bones are not porous enough to be effectively grafted。 有些骨头的渗透性不够强,因此无法对其进行有效的移植。
同义 leachy(a。 能渗透的)
prairie['preri]n。 大草原
搭配 prairie landscape 草原景观
例句 The Columbian white…tailed deer; was mon in the open prairie country in earlier times; but now it is restricted to the low; marshy islands and flood plains along the lower Columbia River。 哥伦比亚白尾鹿在早期辽阔的草原国家十分常见,如今它们的生活区域却被限制于低地、沼泽以及哥伦比亚河下游的洪泛平原地区。
precipitate[pri'sipiteit]v。 促成;降水;沉淀 n。 沉淀物
搭配 infusible precipitate 不溶性沉淀物
例句 A great deal of water was lost by evaporation; but it returned to the ocean when it was precipitated as rain。 大量的水因蒸发而流失,最后又以降雨的形式回到了海中。
precipitation[pri?sipi'tei?n]n。 降雨量;沉淀
搭配 precipitation intensity 降雨强度
例句 There are many factors that influence the succession; such as the nature of the soil; exposure to sun and wind; regularity of precipitation; chance of colonizations; and many other random processes。 许多因素都会影响演替:比如土壤的本质、光和风的影响、降水规律、定居的机会,以及其他的随机过程。
predator['pred?t?r]n。 捕食性动物;食肉动物;掠夺者
例句 1。 Songbird species that are vulnerable to predators have evolved ways of reducing the dangers of being found and caught。 特别容易受到捕食者攻击的鸣鸟已经进化出能够降低危险的方法,使它们不会被找到并捕获。
2。 Some birds elevate their nests in higher branches maybe in order to avoid predators that are not able to climb trees。 一些鸟把窝建到更高处的树枝上,这可能是为了躲避那些不会爬树的掠食者。
同义 carnivore(n。 食肉动物)
progression[pr?'gre?n]n。 前进,进程;连续
例句 Like the scientist explained in the seminar; the fossil formations showed that evolution may be a slow progression。 如同科学家在研讨会上解释的那样,化石的形成表明进化或许是一个缓慢的过程。
同义 series(n。 连续)
promote[pr?'mout]v。 促进;提升;宣传
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