deteriorate 是什么意思呀？

deteriorate 

恶化、变坏

deteriorate into (something)

演变成某事、恶化成某事

Leather can deteriorate in damp conditions. 

皮革在潮湿的条件下会变质。

His health began to deteriorate. 

他的身体状况开始恶化。

America's deteriorating economy.

美国日渐恶化的经济。

The intro 

(Listening Comprehension)

Hey, this is Mr.Wong speaking. So I was browsing the internet last night and if you search for the phrase "I'm feeling curious" on Google, it will serve you with a randomly generated fun fact. It has all these interesting facts you never knew. I don't know about you but to me, that's amazing. It kept me entertained for hours ! 

Oh, here's one I just read - What animal sleeps with one eye open ? For dolphns, this is an easy task. They can turn off half their brain and close one eye, allowing them to be partly asleep and awake at the same time. According to an article in the Scientific American，dolphins sleep this way so they can be ready to protect themselves from predators and swim to the surface for air. That's pretty cool ! Alright, let's talk about the word of the day which is "deteriorate", check it out !

没看懂？请自己查字典！

(这才是真正的学习过程)

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