当嗅到的时候，老鼠的大脑会给出一个信号。
更重要的是，这种行为可能给出一个美国金融管理的负面信号，使市场看低美国国债。
More important, she says it could send such a negative signal about America’s financial governance that it could make the markets inhospitable to American debt.
这给出了一个强烈的信号，公司信任员工，然而相对来说这还是包含了一点小风险的，因为这项政策与员工不滥用信任相连。
That sent a strong signal that the company trusted employees, yet it involved relatively little risk, because the policy was tied to employees' not abusing the trust.
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