While there is no degree that is entirely recession-proof, data from the U.S. Bureau of Labor Statistics (BLS) can point you to certain careers with a measure of stability.
虽然没有哪个学位在任何经济情况下都是有保障的，但是，从美国劳动统计局公布的数据中，你可以发现让有些职业保持稳定的度量方法。
Standard of proof - In a court case, indicates the degree to which the point must be proven.
证明标准：在法院审理的案件中，用于描述证明所需要达到的程度。
Answering a factorization challenge is proof that the respondent has done a quantifiable degree of work (or obtained the factors surreptitiously from the person who generated the composite).
如果应答者能够回答因数分解质询(Challenge)，则说明他已经做了相当多的工作(或者偷偷地从生成那个组合的人那里得到了因数)。
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