慢速英语:Humans to Mars Official NASA Goal, But What About Radiation?

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inspire – v. to make (someone) want to do something : to give (someone) an idea about what to do or create

reaffirm – v. to formally state (something) again in order to emphasize that it is true

core – n. the most important or basic part of something

mission – n. a task or job that someone is given to do

vital – adj. extremely important

honeycomb – n. a group of wax cells with six sides that are built by honeybees in their hive and that contain young bees or honey

reverse – v. to change (something) to an opposite state or condition