在墨西哥，研究对接种疫苗前腹泻和呕吐的死亡率与接种程序开始之后一年内死亡率做了比较。
In Mexico, the study compared death rates from diarrhoea and vomiting before the vaccine was introduced with the death rates in the year after the programme began.
根据食物的营销研究所的资料，消费者正在使用的超级市场的21 ％的带回家的食物，与一年前比较增加了近一倍的水平。
According to the Food Marketing Institute, consumers are using supermarkets for 21 per cent of take-home food, nearly double the level of a year ago.
为了诱使新的房客能够签一个15年的租契，房主为他们提供了更长的免租金期，比较典型的是增加到36个月，一年前才只有18个月。
New tenants are being offered much longer rent-free periods as an inducement to sign 15-year leases: 36 months typically, up from 18 months just a year ago.
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