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ostulated that all of the students in his class would pass the final exam。 老师要求他班上的所有学生都通过期末考试。
要点 postulate和suppose的含义相同,都表示“假设”,但不同的是postulate主要指为证实某个理论的正确性而进行的假设。
profitable['prɑ:fit?bl]a。 有利可图的;有益的
例句 1。 The government tried to make western farm products more profitable than that of the eastern。 政府试图使西部的农产品比东部的农产品获得更多利润。
2。 After the middle of the seventeenth century; land reclamation decreased significantly as the price of agricultural products began to fall; making land reclamation far less profitable in the second half of the century。 17世纪中期以后,由于农产品价格开始下降,导致土地的复垦显著减少,这使土地复垦的利润在17世纪后半叶变得更少。
3。 This trade route is very important for Europe because it had built highly profitable mercial ties with other regions since the twelfth century。 这条贸易线路对欧洲来说非常重要,因为自12世纪以来,它与其他地区建立了高利润的商贸联系。
proportion[pr?'p?:r?n]n。 比例;部分;均衡
例句 1。 Even though young generation only took a small proportion of the total population; it may have a massive local impact when a large proportion of the young men moved to other areas。 虽然年轻人只占总人口的一小部分,但大部分年轻人移居到其他地区也会对当地产生很大影响。
2。 The proportion of empty space in a rock is known as its porosity; but the concept of porosity is not the same as permeability。 我们知道,岩石中真空的部分表明其多孔性,但是多孔性和渗透性并不是一个概念。
派生 proportionately(ad。 按比例地)
recruitment[ri'kru:tm?nt]n。 征募新兵;补充
例句 Such people were recruited on an ad hoc basis from the area in which they were stationed; and there was obviously large…scale recruitment within Britain。 这些人是专门在驻地招募的,而在不列颠,显然这种招募的规模很大。
response[ri'spɑ:ns]n。 回答;反应,响应
例句 1。 The technique depends on evoked potentials; which are electrical brain responses that may be related to a particular stimulus。 这种技术依赖于脑诱发电位,这是与特定刺激有关的脑电波反应。
2。 Researchers can careful
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