VOA慢速英语:While You Sleep, Your Brain Works

insomnia - n. a prolonged and usually abnormal inability to get enough sleep (“An insomniac is a person who has trouble sleeping over a long period of time.”)

to moonlight; moonlighting – v. to work at a second job in addition to your regular job (“No wonder she is so tired at work. I just found out that she has been moonlighting as a night club singer.”)

toxin n. a poisonous substance and especially one that is produced by a living thing.  "Toxic" is the adjective of "toxin." (“The liver gets rid of many toxins in the body.”)

inject v. to force a liquid medicine or drug into someone or something by using a special needle (“They injected the mice with dye.”  “The injection was a colored dye solution.”)

shrink v. to become smaller in amount, size, or value (“She washed her new wool sweater in hot water and it shrunk two sizes!  So, she gave it to her little sister.”)

And that's the Words in the News.