SSS 2008-08-20
时间：2018-12-24 作者：英语课 分类：Scientific American(八)月
This is Scientific Americans Sixty Seconds Science. I’m Steve Mirsky. Got a minute?
You’ve no doubt heard that grapefruit juice can greatly increase the effects of some drugs. Even to a dangerous degree. Pharmacologist David Bailey made that discovery almost 20 years ago. A substance in the juice blocks an enzyme 1 that breaks down the drugs. Now Bailey’s back with a fresh finding—grapefruit juice, orange juice, apple juice and other fruit juices can also severely 2 decrease the absorption of certain drugs. He announced this discovery August 19th at the national meeting of the American Chemical Society in Philadelphia.
Some of the drugs that have their dosages effectively decreased by various juices include medications that fight heart disease, infection and even the rejection 3 of transplants. Key ingredients in the juices appear to block a molecule 4 that carries drugs from the small intestine 5 into the bloodstream. So a lot of the medication gets flushed out without ever reaching its target. Bailey says, "This is just the tip of the iceberg 6. I'm sure we'll find more and more drugs that are affected 7 this way." So when taking medications, a sip 8 of H2O is probably the way to go.
Thanks for the minute for Scientific American's 60-Second Science. I'm Steve Mirsky.
- Above a certain temperature,the enzyme molecule will become unfolded.超过一定温度，酶分子将会展开。
- An enzyme that dissolves the fibrin of blood clots.能溶解血凝块中的纤维的酶。
- He was severely criticized and removed from his post.他受到了严厉的批评并且被撤了职。
- He is severely put down for his careless work.他因工作上的粗心大意而受到了严厉的批评。
- He decided not to approach her for fear of rejection.他因怕遭拒绝决定不再去找她。
- The rejection plunged her into the dark depths of despair.遭到拒绝使她陷入了绝望的深渊。
- A molecule of water is made up of two atoms of hygrogen and one atom of oxygen.一个水分子是由P妈̬f婘̬ 妈̬成的。
- This gives us the structural formula of the molecule.这种方式给出了分子的结构式。
- This vitamin is absorbed through the walls of the small intestine.这种维生素通过小肠壁被吸收。
- The service productivity is the function,including external efficiency,intestine efficiency and capacity efficiency.服务业的生产率是一个包含有外部效率、内部效率和能力效率的函数。
- The ship hit an iceberg and went under.船撞上一座冰山而沉没了。
- The glacier calved a large iceberg.冰河崩解而形成一个大冰山。