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（单词翻译）
Topics: Famous Americans: Sacagawea; NASCAR racing; to take its toll (on someone); you are/is; whatever versus whatsoever
Words:
to leave your mark on (something)
expedition
uncharted territory
trapper
to negotiate
racetrack
ratings
to sanction
series
prize money
trophy
collision
to take its toll (on someone)
whatever
whatsoever
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