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pike roads were very slow and too costly for some people to travel on them。 这些收费公路不仅行驶缓慢,而且对一些人来说花费太高。
unanticipated[??n?n'tisipeitid]a。 意料之外的
例句 With the rapid technical development of photography; the introduction of lighter and simpler equipment and new emulsions that coated photographic plates; film; and paper; images can be made at unanticipated speed。 随着摄影技术的迅速发展,以及更轻薄、更简单的设备的引进,还有新的可以涂在摄影底片、胶卷和相纸上的感光乳剂,图片可以以意想不到的速度制作出来。
urban['?:rb?n]a。 城市的,市内的
例句 1。 Trade was the mainstay of the urban economy in the Middle East as caravans negotiated in the surrounding desert; and it was only restricted by mountain ranges and the access to water。 贸易是中东城市经济体的主要部分,大篷车在周围的沙漠地区进行谈判,而唯一的障碍不过是山峰及通往水路的道路。
2。 In recent years; the urban population decreased rapidly。 在最近几年,城市人口迅速减少。
utilize['ju:t?laiz]v。 利用
例句 1。 The introduction of new screen was delayed for a quarter century; and color also did not bee a norm until the 1950s; though utilized over the next two decades for special productions。 新型屏幕的引进被推迟了25年,而色彩虽然在接下来的20年中被用于特殊的产品,但直到20世纪50年代才成为一种标准。
2。 Scientists are planning to utilize a green and environmentally…friendly alternative to diesel; for example biofuel。 科学家希望利用一种绿色环保的能源以替代柴油,比如生物燃料。
要点 短语make use of与utilize的含义相同,都表示“利用”。
valuable['v?lju?bl]a。 贵重的;有价值的 n。[常 pl。]贵重物品
例句 1。 The acacia trees are a valuable source that provides nutrition for the ants。 金合欢树是一种有价值的资源,可以为蚂蚁提供营养。
2。 The vegetation is considered valuable for its ability to prevent erosion and marshland deterioration。 这种植物可以遏制侵蚀和沼泽地恶化,因此很有价值。
3。 The rare and valuable metals and stones found in the Middle Eastern deserts have always been in high demand in surrounding areas。 附近地区对中东沙漠中发现的稀少而贵重的金属和石头有着很高的需求。
visible['viz?bl]a
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