Aluminum remained unknown until the nineteenth century, because nowhere in nature is it found free, owing to its always being combined with other elements,

　　most commonly with oxygen, for which it has a strong affinity.

　　词汇突破：1.Aluminum 铝

　　2.Free 元素的游离状态

　　3.Affinity 归属感

　　He has a close affinity with the landscape he knew when he was growing up...

　　他对这片从小就了解的土地有着一种归属感。

　　Affinity for 一种元素对于另一种元素的亲和力

　　主干识别： Aluminum remained unknown

　　铝一直没有被人发现；

　　切分成分： 1. because nowhere in nature is it found free, owing to its always being combined with other elements, most commonly with oxygen, for which it has a strong affinity.

　　2. until the nineteenth century.

　　独立成句：1.because nowhere in nature is it found

　　=  Because it is found nowhere in nature.

　　由于在自然界找不到游离状态的铝;

　　2.owing to its always being combined with other elements, most commonly with oxygen

　　由于它总是跟其他元素结合在一起;最普遍的是跟氧结合

　　3.for which it has a strong affinity.

　　Which= oxygen

　　It = aluminum

　　= aluminum has a strong affinity for the oxygen

　　铝跟氧有很强的亲和力。

　　调整语序：中文习惯先翻原因，再翻结果

　　参考译文： 铝总是跟其他元素结合在一起，最普遍的是跟氧结合，因为铝跟氧有很强的亲和力，进而在自然界找不到游离状态的铝；所以，铝直到19世纪才被人发现。

　　今天的句子：

　　这是文科的句子！

　　The second effort , by Joshua Greenberg, takes a more empirical approach to universality，identifying traits (particularly in word order) shared by many language which are considered to represent biases that result from cognitive constraints.

　　送大家一句话吧！

　　Age wrinkles the body. Quitting wrinkles the soul.

　　岁月使皮肤起皱，放弃使灵魂无光！

　　——Douglas MacArthur

　　（道格拉斯.麦克阿瑟）

　　麦克阿瑟是一个很有范的美国上将，这几张图片送给大家吧！

　　谢谢你们的支持！