可能的原因

The presence of REE tetrad effects in apatites and whole rocks of S-type granites has been reported by Sha and Chappell (1999) and Zhao et al.(1999), respectively. The REE tetrad effect in minerals, such as apatite, spessartite, beryl, alkali feldspar and spodumene, from all zones of Altay No. 3 pegmatite has been found remarkable, and the fractionations among isovalent incompatible elements in these minerals are also significant. This paper puts forward that the REE tetrad effect is one of the basic features of peraluminous melts and the origin of REE tetrad effect might be probably related to some processes prior to the formation of pegmatite magma. The immiscibile liquid separation between silicate melt and hydrosaline melt may be responsible for it.

由于阿尔泰3号伟晶岩脉各带磷灰石以及与其共生的石榴石、绿柱石、碱性长石、锂辉石矿物均存在明显的稀土"四重效应"以及相同电价、相似离子半径的不相容元素间存在显著的分异，并结合最近赵振华等(1999)和Sha and Chappell(1999)报道S型花岗岩全岩和单矿物(磷灰石、独居石、长石、黄玉等)均存在稀土"四重效应"这一现象，本文研究提出，稀土"四重效应"是富挥发分过铝质岩浆体系的一个基本特征，其机制既不可能由含稀土的副矿物早期结晶引起残余熔体相中REE含量变化的结果，也不能定性地归因于流体相与熔体相相互作用过程中稀土元素在流体/熔体之间分异的结果，而很可能与伟晶岩岩浆形成之前某些过程密切相关，S型花岗岩岩浆在液相线以上存在硅酸盐熔体与高盐熔体的不混溶液相分离有可能是过铝质岩浆体系产生稀土"四重效应"的主要原因。

Positive correlation between Mg~# and P_2O_5 and negative correlation between P_2O_5 and FeO suggest that addition of P is not the key role for the separation of immiscible oxide melts. In contrast, negative correlation between Mg~# and Fe_2O_3/FeO ratios implies that the increasing of oxygen fugacity is very likely the main factor to induce immiscibility of oxide melt.

Mg#与P2O5的正相关以及P2O5与FeO含量的负相关，表明P不是导致氧化物熔体不混熔的主要原因；而Mg#与Fe2O3/FeO的负相关则说明，岩浆演化过程中氧逸度的升高可能是导致氧化物熔体不混熔的主要原因。

The result suggests that chewing betel quid containing PBI may activate NF-kB expression that may be one of pathogenesis of OSF. NF-kB expression induced by safrole in fibroblasts may be mediated by ERK activation and COX-2 signal transduction pathway.

实验结果显示，咀嚼内含荖花的槟榔诱发NF-kB，这可能是造成OSF致病原因之一，此外，黄樟素在造纤维母细胞中诱发NF-kB可能是藉由ERK及COX-2传导路径来调控的。

Before liberation the whole China had belonged to semicolonial and semi-feudalsociety.This country and her people were suffering loss and sustaining injury. Peopleinitiated ceaseless nationalism and furious political battle. Face this circumstance, theflower of freedom lost cultural soil. The soil cannot give peaceful and steadydevelopment for liberalism,on the contrary, it can provide opportunity for thedevelopment of extreme activism and stubborn conservatism.This is exactly a rootreason that the liberalism atrophy over a long period of time, or so reel, can't stand firma heel in China.

从整体上看，近代中国仍处于半殖民地、半封建社会的历史条件下，一场接一场的民族救亡运动和激烈对抗的社会政治斗争，不可能造就自由的花朵所需要的文化土壤，不可能给自由主义以和平渐进的稳步发展，只能给极端的激进主义和固执的保守主义以无限发展的可能，这正是自由主义长期萎缩，左右摇摆，不能在中国站稳脚跟的一个根本原因。

The social determents of disease include both of the constituent elements of society and social structure itself.

诱发疾病的社会原因既可能是包括个人角色行为在内的社会构成要素，也可能是社会结构。

The monoethylalkanes in the stalagmite possibly derive from the soil on the top of the cave that transported by the drip water.

主要原因可能是微生物选择性降解的结果，也有可能是土壤与石笋中微生物种类分布差异所造成的。

Probably became extinct as a result of disease and predation, as well as habitat loss, compounded by the exceptional strength of Hurricane Iwa - although by the time of this hurricane it was too late to save the species.

灭绝原因可能由于疾病和被捕食，也可能是栖息地的消失，加上Iwa飓风的破坏作用，尽管那个时候对于保护这个种已经太晚了。

If, like me, you've been forced to take breaks for a while, it can be very disorienting to come back to your old guild and not recognize many of the new names there, because old friends have gone and made new characters while you were away.

如果你像我一样，因为某些原因不得不AFK一阵子，当你回来后，你很可能会觉得不适应，或者认不出很多新名字，因为你的某些老朋友可能走了，或者在你AFK的时候又建了新号。

While idolizing material wealth is likely to be a path to spiritual and moral poverty, it is important to remember some of the reasons why people get rich in a market economy as well as some of the implications of their efforts.

对物质财富的追求可能会导致精神和道德上的贫乏，但是，在市场经济下，人们致富除了自身的努力之外，也有其它的一些原因，而记住这些原因是很重要的。

But an early repayment could pose a risk to other banks that received government money, by rekindling investor concerns about their health.

不过提前返还贷款可能会给其他收到政府救助资金的银行带来风险，原因是这可能会重新引起投资者对这些银行健康状况的担忧。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了