porous[p?:r?s]a。 有毛孔或气孔的;能渗透的
例句 1。 Sedimentary rocks are porous; such as sandstones and conglomerates; and they 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[prisipiteit]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?sipitei?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
例句 1。 In this case; sedimentation was promoted by higher temperatures and pressures; which is responsible for the formation of petroleum。 在这个例子中,高温高压促成的沉淀是石油形成的原因。
2。 In the early decades of the foundation of the United States; the agrarian movement promoted the farmer as societys hero。 在美国建国之初的几十年间,农业运动把农民宣扬为社会的英雄。
同义 boost; advance(v。 促进)
要点 promote通常指“促进商业销售”,而在托福阅读中,promote经常与化石或沉淀物质的形成搭配,如:promote fossilization“促进石化过程”。
propagate[prɑ:p?geit]v。 繁殖;传播;宣传
例句 1。 These plants propagate through producing spores; but the spores carry no supply of nutrients and are unprotected; lacking an outer coating。 这些植物通过产生小型孢子来进行传播,但这些孢子不含有任何营养物质,也缺少外层的保护。
2。 Some tropical plants are able to be propagated from seeds only。 一些热带植物只能通过种子来进行繁殖。
同义 reproduce(v。 繁殖)
protective[pr?tektiv]a。 保护的,防护的
搭配 protective price 保护价格
例句 1。 Protective barriers have to be built to protect seawater from flooding this area。 必须修建防护屏障以防止海水在这一地区泛滥。
2。 Coconuts are able to establish themselves in distant locations thus their seeds can maintain hard; protective coats。 椰子可以在偏远的地方生长,这样它们的种子就能保留坚硬而具有保护作用的外层。
quantity[kwɑ:nt?ti]n。 量,数量
例句 The photo evidence suggests that liquid water ever existed on the surface of Mars in great quantity。 这些图像证据表明,液体的水曾经大量存在于火星表面。
相关 quality(n。 质量)
quartz[kw?:rts]n。 石英