【英语时差8，16】犯罪现场调查

 Amoment of crime scene investigation¹   Ya?l: Hi Don, what are you...

Don: Shh! I'm watching my favorite TV police drama: Crime Lab!

Y: Oh, cool. Hey, what's that guy doing?

D: Y'know Ya?l, you do have the right to remain silent...

Y: Why is he spraying that stuff on the ground?

D: You're not gonna clam² up until I explain this, are you?

Y: Probably not.

D: All right, fine. I just happen to be a regular reader of the "Crime Lab" website, so I know all about police forensics.

Y: Let's hear it, Sherlock.

D: The stuff being sprayed is called luminol. It's a chemical mixture used to detect traces of blood. See those glowing green splotches on the ground? That's where the perp-Y: "Perp"?

D: Yeah--perpetrator--that's what detectives call criminals. Anyway, that's where the perp tried to clean up his victim's blood, but some invisible traces of it remain behind. Spraying luminol on the traces makes them visible.

Y: Luminol, as in illuminate³. I get it. So how does luminol work?

D: A chemical reaction occurs when luminol comes into contact with hemoglobin, an oxygen-carrying protein in blood. The iron in hemoglobin causes the chemicals in luminol to react, meaning that their atoms rearrange to form new molecules⁴. Since the original chemical molecules had more energy than the newly created molecules, during the reaction the extra energy is disposed of in the form of light. It's the same thing that happens when fireflies glow.

Y: That's neat. Y'know, you would have made a good detective, Don.

D: Really?

Y: Sure. Tune⁵ in next week when Detective Glass solves yet another Moment of Science mystery!

D: I like the sound of that.  

1 investigation   

n.调查，调查研究

参考例句：

• In an investigation,a new fact became known, which told against him.在调查中新发现了一件对他不利的事实。
• He drew the conclusion by building on his own investigation.他根据自己的调查研究作出结论。

2 clam   

n.蛤，蛤肉

参考例句：

• Yup!I also like clam soup and sea cucumbers.对呀！我还喜欢蛤仔汤和海参。
• The barnacle and the clam are two examples of filter feeders.藤壶和蛤类是滤过觅食者的两种例子。

3 illuminate   

vt.照亮，照明；用灯光装饰；说明，阐释

参考例句：

• Dreams kindle a flame to illuminate our dark roads.梦想点燃火炬照亮我们黑暗的道路。
• They use games and drawings to illuminate their subject.他们用游戏和图画来阐明他们的主题。

4 molecules   

分子( molecule的名词复数 )

参考例句：

• The structure of molecules can be seen under an electron microscope. 分子的结构可在电子显微镜下观察到。
• Inside the reactor the large molecules are cracked into smaller molecules. 在反应堆里，大分子裂变为小分子。

5 tune   

n.调子；和谐，协调；v.调音，调节，调整

参考例句：

• He'd written a tune,and played it to us on the piano.他写了一段曲子，并在钢琴上弹给我们听。
• The boy beat out a tune on a tin can.那男孩在易拉罐上敲出一首曲子。