GRE考试中，很多长句难句让考生们困扰不已，本文选择了部分难句给大家稍作分析。
1. More probable is bird transport，either externally，by accidental attachment of the seeds to feathers，or internally，by the swallowing of fruit and subsequent excretion of the seeds.
更有可能的是鸟类运输：或者是通过外部途径，即由于种籽偶然粘附在羽毛上;或者是通过内部方式，即由于鸟类吞食果子并随后将种籽排泄出来。
2.It is not known how rare this resemblance is，or whether it is most often seen in inclusions of silicates such as garnet，whose crystallography is generally somewhat similar to that of diamond;but when present，the resemblance is regarded as compelling evidence that the diamonds and inclusions are truly cogenetic.
现在尚不知这种类似稀少到何种地步，也不知道是否它最常见于象石榴石一类的硅酸盐内含物中，而这类物质的晶体结构普遍地在某种程度上类似于金刚石的晶体结构。但一旦存在，这种类似就被视作极有说服力的证据，证明金刚石与内含物确是同源的。
3.Even the “radical” critiques of this mainstream research model，such as the critique developed in Divided Society，attach the issue of ethnic assimilation too mechanically to factors of economic and social mobility and are thus unable to illuminate the cultural subordination of Puerto Ricans as a colonial minority.
即使是对这一主流研究模型的“激进”批评，诸如《分裂的社会》(Divided Society)一书中所提出的那种批判，亦将少数民族同化问题过分机构地与经济和社会移动性的因素联系起来，因此无从阐明波多黎各人作为一个殖民地少数民族的文化从属关系。
4.They are called virtual particles in order to distinguish them from real particles，whose lifetimes are not constrained in the same way，and which can be detected.
它们被称为“虚粒子”(virtual particle)，以便与实粒子(real particle)区分开来，而实粒子则不会以这种方式受到制约，并且其存在可得以测定。
5. Other theorists propose that the Moon was ripped out of the Earth’s rocky mantle by the Earth’s collision with another large celestial body after much of the Earth’s iron fell to its core.
其他的理论家提出，在地球的大部分铁沉入到地核之后，由于地球与另一个庞大的天体发生碰撞，月亮便从地球那石质的地幔中撕裂开来而形成的。
6.Thus，what in contrast to the Puritan colonies appears to Davis to bepeculiarly Southern- acquisitiveness，a strong interest in politics andthe law，and a tendency to cultivate metropolitan cultural models-wasnot only more typically English than the cultural patterns exhibitedby Puritan Massachusetts and Connecticut，but also almost certainlycharacteristic of most other early modern British colonies fromBarbados north to Rhode Island and New Hampshire.
因此，那些与(北方)清教殖民地形成鲜明对比、并在戴维斯教授的心目中显得具有特殊南方色彩的特征——占有欲、对政治和法律的浓厚兴趣、以及培养大都市文化模式的倾向——不仅仅要比清教的马萨诸塞州和康乃涅克州所展现出来的文化模式更具有典型的英国色彩，并且几乎毫无疑问地构成了绝大多数其它早期近代英国殖民地的特征，从巴巴多斯北至罗得岛和新罕布什尔州。
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