半世纪的

Darwin studied evolution in the context of Charles Lyell's geology, but our present understanding of Earth history includes some critical advances made during the last half-century.

达尔文是在查尔斯·莱尔地质学的背景中研究进化，但我们目前对地球历史的了解包括一些在过去的半个世纪里取得的重大进展。

For example, england has moth of feet of a kind of birch, gray type is before 1850. Was in 1850 Mancunian the choppy form that discovered black. Leaf of 19 centuries second half, as industrialized development, the HS in waste gas killed the gray lichen on bark, fuliginous truncal fume black.

例如，英国有一种桦尺蛾，在1850年前都是灰色类型。1850年在曼彻斯特发现了黑色的突变体。19世纪后半叶，随着工业化的发展，废气中的HS杀死了树皮上的灰色地衣，煤烟又把树干熏成黑色。

Of all the Minor Prophets the Book of Nahum has received the greatest and strongest light from the discoveries of the last half-century.

所有的小先知的那鸿书已收到的最大和最强烈的光线从发现过去半个世纪。

Folk diplomacy holds very important status in the diplomatic strategy, and in the1950s, Premier Zhou ever said, China diplomacy is the union of the official, semiofficial and the folk.

民间外交在我国的总体外交中占有很重要的地位。早在上个世纪50年代，周恩来总理就曾说过，中国的外交是官方、半官方和民间的三者结合。

Through analysing and researching the usage of subminiature counterpoint in the typical composers' works in the late of 20th century, the article discussed its attribute features, style innovation, and composition technique.

文章的作者通过分析和研究二十世纪后半叶最有代表性的作曲家及其作品中的微型复调，对其属性特征、风格创新以及写作技术等做了进一步的探讨。

Urban spread is illstrated not only by the dramatic expansion of the Senegalese capital Daker over the past half century, from a small urban centre at the tip of the Cape Verde peninsula ,to a metropolitan area with 2.5 million people spread over the entire peninsula ,but by the rapid development of a small town like Bangasson in the Central Africa republic, now beginning to affect the neaby forest.

说明城市扩张的例子不仅有达喀尔还有班加苏等小城镇：塞内加尔首都达喀尔在过去半个世纪里从一个位于佛得角半岛顶端的小型城市急速扩张成今天拥有250万人口，延展整个半岛的都市；此外，想中非共和国的小城市班加速苏，其快速发展一开始影响到周边森林。

Mr. Liu Tianhua is modernist school's first ancestor, he has profited from the Western musical instrument performance technique and the skill, bold, the urheen localization is scientifically five the position, thus expanded the urheen range scope sufficiently, has enriched the expressive force, has established the new artistic connotation.

到了近代，胡琴才更名为二胡。半个多世纪以来，二胡演奏水平已进入旺盛时期。刘天华先生是现代派的始祖，他借鉴了西方乐器的演奏手法和技巧，大胆、科学地将二胡定位为五个把位。从而充扩了二胡的音域范围，丰富了表现力，确立了新的艺术内涵。

The semiparametric regress model is important model developed in 1980s. It colligates the merits of regress model and nonparametric model. Therefore it has strong application property.

半参数回归模型是二十世纪八十年代发展起来的一种重要的统计模型，它综合了参数回归模型和非参数回归模型的优点，具有很强的适应能力。

It is a way of doing business that is as demanding as it is uncommon. and it is the reason why the brand has epitomized fine ice cream for nearly half a century.

这种经营方式的特殊在于其产品的需求是小众化的，而这也是这个品牌在近半个世纪以来都作为着精品冰淇淋象征的原因。

The friendship which has subsisted between us, now half a century, and the harmony of our political principles and pursuits, have been sources of constant happiness to me thro' that long period.

我们之间保持的友情已经半个世纪了，我们的政治原则和抱负也相互和谐，长时期的，这些对于我是恒久的幸福源泉。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！