Lesson 25: Let's Do an Experiment!，我来为大家科普一下关于英语九年级全一册单词第五单元?下面希望有你要的答案，我们一起来看看吧!
英语九年级全一册单词第五单元
Lesson 25: Let's Do an Experiment!
1 Let's do an experiment.
让我们做个实验。
2 Then I turn the jar upside down and take my hand off the cardboard.
然后我把罐子倒过来，把手从纸板上拿开。
3 You think the water will pour out, Danny.
你觉得水会倒出来，丹尼。
4 Let's test which theory is correct.
让我们检验一下哪个理论是正确的。
5 That's called the scientific method.
这就是科学方法。
6 He puts on a raincoat and sits down.
他穿上雨衣，坐了下来。
7 Brian, take your hand off the cardboard.
布莱恩，把手从纸板上拿开。
8 The force of the air keeps the water in the jar.
空气的力量使水保持在罐子里。
9 We have discovered that the air pressure helps the cardboard hold the water in the jar.
我们已经发现空气压力帮助纸板托住罐子里的水。
10 I conclude that air is stronger than I thought.
我的结论是，空气比我想象的更有力。
Lesson 26: Keep the Candle Burning
11 Put the candle holder on the shallow dish.
把烛台放在浅盘子上。
12 a lighter or matches
打火机或火柴
13 Examine the water in the jar.
检查罐子里的水。
14 When the candle stops burning, it has used up all the oxygen in the air.
当蜡烛停止燃烧时，它已经耗尽了空气中所有的氧气。
15 Because about one fifth of the air is made up of oxygen, the water rises and fills about one fifth of the jar.
因为大约五分之一的空气是由氧气组成的，所以水会上升，填满罐子的五分之一。
Lesson 27：planet Danny
16 Danny turns the telescope around and looks through it again.
丹尼把望远镜转过来，再次透过望远镜看。
17 I told my father that we were studying the solar system.
我告诉父亲我们在研究太阳系。
18 The stars come out at night.
星星在晚上出来。
19 You certainly can't, Danny!
你当然不能，丹尼!
20 I don't think you can find one unless you have a bigger telescope.
除非你有一个更大的望远镜，否则你是找不到的。
21 Actually, double the size of your house!
实际上是你家房子的两倍大!
22 Well, it's worth a try, even if I don't find a planet.
即使我找不到行星，也值得一试。
23 The universe is a mystery.
宇宙是个谜。
24 Scientists say the universe contains billions of galaxies.
科学家说宇宙中有数十亿个星系。
Lesson 28: The Study of Living Things
25 Dr. Chip Taylor teaches biology at a university in the United States.
奇普·泰勒博士在美国一所大学教生物学。
26 Just like a migrating bird, this butterfly travels about 4 000 kilometres south in fall.
就像候鸟一样，这种蝴蝶在秋天向南飞行4000公里。
27 Fantastic facts about the butterfly have been drawing Dr. Taylor's attention.
关于蝴蝶的奇妙事实引起了泰勒博士的注意。
28 They can cover some trees almost completely.
它们几乎可以完全覆盖一些树木。
29 The butterflies that return to the south are the great-great grandchildren of the butterflies that left for the north.
回到南方的蝴蝶是离开北方的蝴蝶的曾曾孙。
30 In general, a blueprint is a drawing that shows how to put a house together with many different parts.
一般来说，蓝图就是展示如何用许多不同的部分组装一座房子的图纸。
31 But building a living thing is far more complex than building a house.
但是建造一个有生命的东西比建造一个房子复杂得多。
32 Except for some twins, every living thing has its own unique DNA.
除了一些双胞胎，所有生物都有自己独特的DNA。
33 You have your own unique DNA, but it repeats patterns from your parents' DNA.
你有自己独特的DNA，但它重复你父母的DNA模式。
Lesson 29: DNA—The Story of You
34 In general, a blueprint is a drawing that shows how to put a house together with many different parts.
一般来说，蓝图就是展示如何用许多不同的部分组装一座房子的图纸。
35 But building a living thing is far more complex than building a house.
但是建造一个有生命的东西比建造一个房子复杂得多。
36 Except for some twins, every living thing has its own unique DNA.
除了一些双胞胎，所有生物都有自己独特的DNA。
37 You have your own unique DNA, but it repeats patterns from your parents' DNA.
你有自己独特的DNA，但它重复你父母的DNA模式。
38 From your DNA, scientists can identify not only you, but also people who are related to you.
从你的DNA，科学家不仅可以识别你，还可以识别与你有关系的人。
39 When you have a grandson or granddaughter, he or she will have your DNA.
当你有孙子或孙女时，他或她将拥有你的DNA。
40 Your DNA has billions of instructions that explain why you are the way you are.
你的DNA里有数十亿条指令，解释了你为什么会是现在的样子。
Lesson 30：Science Affects Us
41 I suggest you try it, too!
我建议你也试试!
42 Cover the jar with the cardboard and turn the jar over.
用纸板盖住罐子，把罐子翻过来。
43 Our lives would surely be very different without scientific developments.
如果没有科学的发展，我们的生活肯定会大不相同。
44 Science is interesting, and it affects our everyday lives.
科学很有趣，它影响着我们的日常生活。
45 I always wonder what life would be like without computers or mobile phones.
我总是想知道没有电脑和手机生活会是什么样子。
46 Scientific discoveries are making our lives better and better.
科学发现使我们的生活越来越好。
47 The air pressure pushing up on the cardboard is higher than that of the water pushing down from inside the jar.
向上推纸板的空气压力比罐子里往下推的水压力要高。
48 The higher air pressure outside the jar holds the cardboard in place.
罐子外较高的气压将纸板固定在适当的位置。
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