Signalling solves the mystery: paying a dividend is a sign of strength, showing that a firm feels no need to hoard cash.

信号行为能够解开这个迷团：支付红利是一种力量的信号，表明企业认为无需囤积现金。

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There is no need for doctors or patients to sign the records or advices by traditional method, instead of a personal information card contains personal digital certificates.

医生和患者不再需要在传统纸张病历或者医嘱上面签名，利用内嵌了个人数字证书以及私钥信息的个人信息卡就可以完成对病历的电子签名过程。

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If there is no sign of a rise in the core rate of inflation (excluding energy prices), then there is no need to raise interest rates.

ECONOMIST: How should central banks respond to a rise in oil prices?