单词	challenger
释义	challenger1 /ˈtʃalɪndʒə / noun 1A person who engages in a contest: new championship challengers the leading team among the nine challengers 1.1A person who makes a rival claim to or threatens someone’s hold on a position: a serious challenger for the title a potential challenger for the party leadership 2A person who disputes the truth of or places themselves in opposition to something: heroic challengers of authority the bold challenger of campus orthodoxy Rhymes Salinger Challenger2 /ˈCHalənjər / A US space shuttle that exploded 1.5 minutes after launch on January 28, 1986, killing its crew of seven.The countdown clock is ticking as seven astronauts aboard the space shuttle Challenger prepare for launch.... The space shuttle Challenger explodes 73 seconds into take-off killing its crew of 7. His final major task was as a member of a committee set up to investigate the cause of the explosion on the space shuttle Challenger on Tuesday 28 January 1986.
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