VOA慢速英语:Aspirin May Cut Cancer Deaths

chemotherapy medical : the use of chemicals to treat or control a disease, such as cancer

metastatic medical : the spread of a disease, such as cancer cells, to other parts of the body

dose medical : the amount of a medicine taken at one time

colorectal medical : relating to the lower part of the large intestine, colon and rectum

glimmer of hope phrase : a very small sign that something might improve or succeed

encouragement – n. giving praise or positive comment

thrilled – v. very excited or happy​

hesitate – v. to stop briefly before you do something

pros might outweigh the cons – phrase : there are more good things that might happen than bad