全句是这样的When Mike Kelly first set out
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全句是这样的
When Mike Kelly first set out to build his own private space-pansportation service,he figured his bread-and-butter business would be satellites into high-earth orbit
"bread-and-butter business
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本意是面包和黄油,这里指工资或者bread-and-butteradj.实用的,生计的,基本的bread-and-butteradj.（形容词）Influenced by or undertaken out of necessity:谋生的,为了糊口的：受生活需求支配或承担的：a bread-and...
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