VOA慢速英语:'Luck,' by Mark Twain

ally– n. (pl. allies) a country that supports and helps another country in a war

disabled – adj. having a physical or mental disability : unable to perform one or more natural activities (such as walking or seeing) because of illness, injury, etc.

dismiss – v. to send away; to refuse to consider

dismissal – n. the act of sending a person away (from a position at work or in a school)

join up – (idiom) enlist in the military service

superiors – n. a person of higher rank or status than another