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发表于 2009-10-29 18:04
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10.29 Thu
场景分类 下 生物类 (2) fish
状况:我真的没有听写天分……和水平,当生物相关来临的时候。
TowardsTo us,the evironment in which fish dwell ofen thinksseems cold ,dark ,misteriousmysterious ,but there are advantages to living in water ,and this they have played an important role that in making a fish what they are.One is that water is not subject to sudden temperture changes ,there for Therefore it makes an excellent habitate for the cold-blacked a cold-blood ainimal.
Another advantage is the water's ability to easily support body wetweight ,prode pleasentProtoplasm has approximately the same density as water,so a fish in water is almost wetlessweightless.
This way that is listen term"weightlessness" in turn means two things ,one ,a fish can get along with a light wetweight and simple bone structure,and two ,limitations to a fish's size are sides a pratically when movedremoved.
yet there is one basic difficulty to living in water .the fact that is incompressible .
For a fish to move through water ,it must actually shavity insideshove it aside.Most can do this by wriglingwiggling back and forth snakesneck-like motion , The fish put thepushes water aside by the forward motion with of its head ,and with a caver curve of its with body at its flexible tail .Next ,the water flows back along the fishes n insidesthe fish's narrowing sides ,closing in at the tail ,and helping the fish perparis a propel itself forward .
The fact that water is incompressible has litterilyliterally shaped the development of fish, a flat inand angular shape can be moved through water only with difficulty, and for this reason ,fish have a basic shape that is beautifully adapted to to deal with this peculiarity
GLOSSARY:
protoplasm :【生】原生质
in turn :换句话说。
limitation: n.限制
shove:推;撞 vt
curve:曲线,弧线 n.
propel:推进,推动;激励,驱使 vt.
incompressible: 不能压缩的
literally:逐字地,照字面地;正确地; 实在地,不加夸张地, 简直
angular shape :有角的形状……
peculiarity:【pɪ,kjulɪ'ærətɪ】奇特,古怪,
第一,完全看不到正确都句子,第二,第一时间反映不出来的词好多……
今天任务:1.回去好好复习音标!2.背下这一段。
wet : [ wɛt]
weight: [wet]
ppppps:哪位给我解释一下“原生质"的意思……
[ 本帖最后由 另维 于 2009-10-29 20:52 编辑 ] |
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