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大学英语教程大学英语教程LessonSix.ppt

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大学英语教程大学英语教程LessonSix.ppt

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大学英语教程大学英语教程LessonSix.ppt

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文档介绍:Lesson Six
The Origin and Diversity of Life
Big Bang 大爆炸
An explosion producing a pressure oscillation of
the order of a millibar or more at a distant point
on the Earth. ., the eruption of Krakatoa in
1883. Large nuclear fusion explosions parable.
explosion 爆炸 pressure oscillation 压力波动, 冲击波
of the order of 大约 millibar [物]毫巴
eruption 爆发
Krakatoa 喀拉喀托火山(印度尼西亚一火山岛)
nuclear fusion 核聚变,parable 可比较的,比得上的
binomial system of nomenclature 双名法
Uses two Latin names, genus and species, for each
type anism.
genus (复genera) 属, (拉)属(分类)
species 种类,物种,类
clade 进化枝
In a cladistic classification, organisms are placed
into taxonomic groups called clades when they
share characteristics that are thought to indicate
common ancestry.
cladistic 基于遗传因素的 classification 分类, 分级
taxonomic 分类学的 group 群组 share 分享,共有
indicate 表明,标明 ancestry 祖先(集合称),家系, 血统
class 纲
A group used in the classification of living
organisms. A class consists of a number of similar or
closely related orders or occasionally of only one order.
classes are usually large and easily recognized groups.
order 目 group 群体 closely related 关系相近的
coacervate 团聚体,凝聚层
A collection anic macromolecules surrounded by
water molecules that are aligned to form a sphere.
collection 集成, 聚积 macromolecule 高分子
align 排列 sphere 球体
continental drift 大陆漂移
The theory that the present continents result from the
break-up of a larger continent and have moved
independently to their present positions.
result from 由...产生 break-up 分裂破碎
independently 独立地, 自立地
core 核心
The core of the Earth is that part lying below the mantle.
mantle 地幔
crust 地壳
The crust of the Earth is the outer shell of the Earth,
defined by position and the properties of some
seismic waves.
composition 成分,合成物 seismic waves 震波
division 门
A unit used in the classification of plants. A division
consists of a number of classes, or occasionally of only
one class, with certain important characteristics in
common.
family 科
A unit used in the classification of plants and a