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(单词翻译:双击或拖选)
(woman) I'd like to begin by thanking Dr. Kane for inviting1 me to be here today. Although I'm not a geologist2, I have been collecting minerals for years. My collection is rally diverse because I've traveled all over the world to find them. Today I've brought a few specimens3 for you to see. After I discuss each one, I'll pass it around so that you can look at it more closely.
As you know, feldspars are the most abundant minerals and are divided into a number of types. These first samples are orthoclases. Notice that they vary in color from white to pink to red. This glassy one is found in volcanic4 rock --- in fact, I found it in New Mexico on a collecting trip.
This next sample that I'll pass around is a microcline mineral --- also called amazonstone. You can identify it by its bright green color. It's often used in jewelry5 and really is quite attractive.
These final samples are all plagioclase feldspars. Many plagioclases are very rare, so I'm particularly proud of the variety in my collection.
I've also brought a few slides of some large mineral samples, and if you'll turn out the light now, I'd like to show them to you.
As you know, feldspars are the most abundant minerals and are divided into a number of types. These first samples are orthoclases. Notice that they vary in color from white to pink to red. This glassy one is found in volcanic4 rock --- in fact, I found it in New Mexico on a collecting trip.
This next sample that I'll pass around is a microcline mineral --- also called amazonstone. You can identify it by its bright green color. It's often used in jewelry5 and really is quite attractive.
These final samples are all plagioclase feldspars. Many plagioclases are very rare, so I'm particularly proud of the variety in my collection.
I've also brought a few slides of some large mineral samples, and if you'll turn out the light now, I'd like to show them to you.
点击收听单词发音
1 inviting | |
adj.诱人的,引人注目的 | |
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2 geologist | |
n.地质学家 | |
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3 specimens | |
n.样品( specimen的名词复数 );范例;(化验的)抽样;某种类型的人 | |
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4 volcanic | |
adj.火山的;象火山的;由火山引起的 | |
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5 jewelry | |
n.(jewllery)(总称)珠宝 | |
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