挪威-圣诞树直到19世纪下半叶才被引进挪威，只有在一个重要的仪式才会放上这种树。

Norway - The tree was not introduced into Norway until the last half of the nineteenth century and a beautiful ritual surrounds the tree.

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与之形成对照的是，北高加索在19世纪后半叶才被俄罗斯吞入口中，而且从来没有被完全消化。

The north Caucasus, on the other hand, was colonised by Russia only in the second half of the 19th century, and was never fully assimilated.

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他和库里都注意到了切叶蚁在以真菌为食的蚂蚁中是一个独特而又复杂的种类，但是它们才在1000年前或者其他以真菌为食的生物之后才开始进化。

He and Currie both noted that leafcutters are uniquely complex among fungus-growing ants, but evolved just 10 million years ago, or 40 million years after other fungus growers.

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The realization of desire for this young Yeats is something only possible in art.

对年轻的叶芝来说这种愿望的,实现只有在艺术里才可能。

耶鲁公开课 - 现代诗歌课程节选