平均期望寿命
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expected average life 预期平均寿命
average expected life
平均预期寿命
以上为机器翻译结果，长、整句建议使用 人工翻译 。
As a result, a 30-year Freddie Mac with a coupon of 5.5% has an expected weighted average life of seven years, as calculated by Bloomberg.
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