How they differ in composition?
他们在成分上有什么不同？
Comets are similar in composition to the gas giants.
彗星在组成上与气态巨行星相似。
Earth's continental crust has changed significantly in composition overtime.
随着时间的推移，地球大陆地壳的组成发生了巨大的变化。
Green algae store food as starch, as do land plants and have cell walls made of cellulose, similar in composition to those of land plants.
绿藻以淀粉的形式储存食物，陆生植物也是如此，它们的细胞壁由纤维素构成，与陆生植物的细胞壁组成相似。
As a result of these diverse methods by which plants supply resources, unique soil communities form under different plant species and under plant communities that differ in composition.
由于植物提供资源的方法不同，在不同的植物种类和组成不同的植物群落下形成了独特的土壤群落。
They are truly lumps of nebular matter, probably similar in composition to the matter from which planets were assembled.
它们的确是星云物质组成的团块，其组成物质可能与行星形成时的物质相似。
Welded tuff is commonly rhyolitic in composition.
焊接凝灰岩在组成上通常为流纹岩。
A new mineral facies has been found for the first time in mathiasite, resembling priderite in composition.
在辉石岩中首次发现了一种新的矿物相，其成分类似于柱红石。
Christophe showed real genius in composition.
克利斯杂夫表现出真正的作曲天才。
Cells in different parts of the endosperm vary somewhat in composition.
细胞在胚乳的不同部分其组成有所不同。
The essay expatiated five reforms in composition teaching led by modern telematics.
本文阐述了现代信息技术引发作文教学的五大变革。
Natural gas is quite variable in composition, but the major constituent (>60%) is methane.
天然气在成分上不大稳定，但主要成分（60％）是甲烷。
However, an average Chinese meal at home is quite different in composition from a Chinese banquet.
但是，中国的普通家餐却完全不同与宴席。
The volcanics are commonly andesitic in composition, but basaltic and rhyolitic volcanics are abundant in some areas.
火山岩的组成通常是安山岩，但在某些地区玄武岩质和流纹岩质也很丰富。
The ideal discovery would be a planet similar in composition to Earth that lies within the Goldilocks Zone and orbits a stable star.
理想的情况是这样的：在居住区内发现和地球组成结构类似的行星，并且围绕稳定的恒星公转。
Otherwise, it is pointed out, the costly data base can hardly deal with the great diversity of natural scene in composition and structure.
否则耗资巨大的数据库仍不能有效地应用于结构千变万化的环境遥感。
Natural languages are very powerful but also very complex; developers not trained in composition sometimes have difficulty communicating complex ideas in writing.
自然语言非常强大，但也非常复杂；未受过写作训练的开发人员在写作中表达复杂想法的时候有时会碰上困难。
Adding an ORDER siblings BY clause which is only allowed in composition with the hierarchical query clause and will return the siblings in the predefined sequence.
添加一个ORDERSIBLINGSBY子句，该子句只能与分级查询子句组合使用，并且将按预先定义的顺序返回同级查询结果。
The red orb at bottom left is a young planet, similar in composition to Jupiter, orbiting a brown dwarf, a dim, failed star that is probably 42 times less massive than the sun.
左下角红色球体，是一颗年轻行星，其组成成分和木星相似，绕褐色矮星做轨道运行。
Then a brief introduction to the length approach in composition writing proposed by Professor Wang Chuming is made with focus on its fresh teaching ideas and teaching task design.
然后，作者简要叙述了王初明教授倡导的外语教学中的“写长法”的一些理念和教学设计原则。
Meanwhile, he also used the opportunity to work in the county cultural centers, open-minded to the painting, Shu Fajie teachers in composition skills, skilled advice to the paper-cut.
同时，他还利用在县文化馆工作的机会，虚心向绘画、书法界名师学习构图技艺，并向剪纸巧手请教。
Even if China's gross domestic product passes that of the United States around 2030 (as Goldman Sachs projects), the two economies would be equivalent in size, but not equal in composition.
即使中国的GDP总量在2030年超过了美国的GDP总量(根据美国高盛公司项目预测)，这两个经济体的大小及其组成经济体的各部分实力也不无法持平。
In such cases, the original composition of the bone or shell remains, but the fossil is made harder and more durable.
在这种情况下，骨骼或外壳的原始成分会保留下来，但化石会变得更坚硬、更耐用。
The correlation of carbon dioxide with temperature, of course, does not establish whether changes in atmospheric composition caused the warming and cooling trends or were caused by them.
当然，二氧化碳与温度的相关性并不能确定是大气成分的变化导致了气候变暖或变冷的趋势，还是它们本身造成的。
Long-term effects are primarily mediated by changes in tree species composition and the consequent alterations of forest structure, productivity, and nutrient uptake.
长期影响主要是由树种组成的变化以及随之而来的森林结构、生产力和养分吸收的变化所导致的。
There is usually a good deal of turnover in species composition, even in a mature community.
即使在一个成熟的群落中，物种组成通常也有很大的变化。
They attempt to look into the composition of forces constituting the demand and the supply for new products and processes, especially in high-technology industries.
它们试图研究构成新产品和新工艺的需求和供应的力量架构，特别是在高技术工业中。
Ir is found in high concentrations in some meteorites, in which the solar system's original chemical composition is preserved.
人们发现，在一些保存着太阳系原始化学成分的陨石中，铱元素的含量很高。
Ir is found in high concentrations in some meteorites, in which the solar system's original chemical composition is preserved.
人们发现，在一些保存着太阳系原始化学成分的陨石中，铱元素的含量很高。
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