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Lanthanides belong to the sixth cycle of the periodic table Ⅲ B family, are all solid metal, they are La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, holmium, erbium, thulium, ytterbium, and lutetium were 15 kinds of metals and their periphery are two layers of electronic 5d16s2, while the peripheral third layer f orbital but never zero to 14, so the external electronic structure of 4f0-145d16s2, and therefore these elements in oxidation number are to 3, very close chemical properties, extraction, when it is difficult to separate them they are mostly multi-element mineral mix, more difficult to increase refining, and their atomic number of 57-71, one by one to increase the number of protons the nucleus, and thus extranuclear electron of gravity is also growing, so that atomic radius decreases with increasing atomic number Z, which makes lanthanides contraction, ionic radius is also reduced, which also makes Zr, Hf, Nb and Ta, Mo and W, the atom and ionic radius very close to each other they also determine a similar nature, resulting in difficult separation, also the tribe Ⅷ of the fifth cycle, ruthenium, rhodium, palladium, and the sixth cycle, osmium, iridium, platinum is very similar in nature, thus The six elements, said platinum group elements.

镧系元素属于周期表第六周期中ⅢB族，全部是固体金属，它们是镧、铈、镨、钕、钷、钐、铕、钆、铽、镝、钬、铒、铥、镱和镥共十五种金属元素，它们的外围两层的电子均是5d16s2，而外围第三层的f轨道电子却从零增加到14个，所以外围电子结构为4f0－145d16s2，而使这些元素氧化数均为＋3，化学性质极为接近，提炼时很难分开，它们的矿石又大多是多种元素混在一起的，更增加提纯难度，它们的原子序数为57－71，核内质子数逐个增加，因而对核外电子引力也不断增强，使原子半径随原子序数Z增加而减小，这就使镧系元素收缩、离子半径也缩小，这也使得Zr和Hf，Nb和Ta、Mo和W等原子和离子半径都很接近、也决定了它们彼此性质类似，以致难以分离、也使第Ⅷ族中第五周期的钌、铑、钯和第六周期的锇、铱、铂在性质上极为相似，因而称这六个元素为铂系元素。

To feast one's eyes on 还可以用在食品方面 I'm on diet trying to lose ten pounds , so I stopped to feast my eyes on the cakes in the bakery window ,but resisted the temptation to go in and buy one to eat .

我正在设法减肥，想减十磅，因此我只能到那些面包房去饱眼福，尽量克制自己不进去买东西吃。

A lot of people like to do one job in their lives. They think people who change their jobs frequently are feckless. They believe that the only way to success is to stick to one job, for constant practice in a professional field helps make an expert.

许多人喜欢一生中做一件工作，他们认为经常换工作的人软弱无能，他们相信成功的唯一途径就是坚持一项工作，因为在一个专业领域里不断的实践有助于专家的形成。

My View on Job-Hopping A lot of people like to do one job in their lives. They think people who change their jobs frequently are feckless. They believe that the only way to success is to stick to one job, for constant practice in a professional field helps make an expert.

我对"跳槽"现象的看法许多人喜欢一生中做一件工作，他们认为经常换工作的人软弱无能，他们相信成功的唯一途径就是坚持一项工作，因为在一个专业领域里不断的实践有助于专家的形成。

The tradition which helps to spread oral communication to cantillate deliver next go to, particularly is it household genealogist record one after one generation it is rumored, today, they is still offer to silent absolute being of Psalter.

帮助把口头传诵的传统传递下去，尤其是之家族系谱记录代代相传，在今天，它们仍是奉献给静默之神的诗篇。到现在我们还没有破解那些文字，就像那些傻学者一样，但我们在努力雷蒙已经懂得一些符号的含义了相信谁建造这些石像武器的迷底终能揭开。

Things go contrary to one's wishes but, I always get into oneself not acquaint with of realm-never saw a ball game before , but was sent to do news about football game;Once doing the television station journest, but found me seems like a director more and more, whole day in command of the photographer and actor shine on me to write good manuscript to lay, it isn't that i find the news,but i direct the news,is just for taking but taking;Now is one patrimony through the reporter of news agency, don't acquaint with similarly of realm,either.

可是事与愿违，我总是进入到自己不熟悉的领域——之前没看过一场球赛，却被派去跑足球新闻；做过电视台编导，后来发现自己越来越像个导演，整天指挥着摄像师和演员照着我写好的"剧本"来演。不再是我发现新闻，而是我导演新闻，一切只是为了拍摄而拍摄；现在是一家财经报社的记者，同样是不熟悉的领域。

One evening the student came into the shop through the back door to buy candles and cheese for himself, he had no one to send, and therefore he came himself; he obtained what he wished, and then the huckster and his wife nodded good evening to him, and she was a woman who could do more than merely nod, for she had usually plenty to say for herself.

1顶楼即屋顶下的一层楼。在欧洲的建筑物中，它一般用来堆破烂的东西。只有穷人或穷学生才住在顶楼里。有一天晚上，学生从后门走进来，给自己买点蜡烛和干奶酪。他没有人为他跑腿，因此才亲自来买。

Back to home, i ask my little nephew how he can face down so fierce a dog.the little nephew said jauntily:"when the dog bark to your "wang wang wang", in fact it is saying one, you return it to two, at this time because dog can't return to your three, very ashamed, don't call."

回到家，我问小侄子用什么办法，居然能镇住这么凶猛的狗。小侄子洋洋得意地说："当狗对你汪汪叫时，它其实是在说one，你就回two，这时狗因为无法回你three，非常惭愧，就不叫了。"

Invest in a fund , be to refer to some principle according to the joint venture , base and incorporated company sharing avails , joint adventure, wield modern trust relation mechanism , the fund that the investor disperses one by one each other is concentrated with fund way to come true anticipating that investment with investment of purpose organizes system

投资基金，是指按照共同投资、共享收益、共担风险的基本原则和股份有限公司的某些原则，运用现代信托关系的机制，以基金方式将各个投资者彼此分散的资金集中起来以实现预期投资目的的投资组织制度

To arrive at no result to be contrary to one's usual habit to keep surging in one's head to establish the existence of sth.

确证的存在 18。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。