1. authority 权威，当局
Mexican authorities noticed a large number of hospitalizations and deaths among healthy adults.
墨西哥当局注意到，在成年人中有大量人住院。
One authority says that these intensely powerful mental events can be not only harnessed but actually brought under conscious control.
一位权威人士说道，这些极其强大的精神事件不但可以约束，还可以有意识地进行控制。
2. equivalent 等价物
The digital credential would be a "voluntary trusted identity" system that would be the high-tech equivalent of a physical key, a fingerprint and a photo ID card.
该数字证书可以成为一个"自愿受信身份"系统，从而成为物理密钥、指纹以及身份证的高科技等价物。
3. alternative 替代物
They tend to keep a tighter hold on their purse and consider eating at home a realistic alternative.
他们更愿意握紧自己的钱包，把在家吃饭作为一种现实的替代。
