Ironically, these improved economic and sanitary conditions may lead to higher disease rates, as infections occur in older age groups, and large outbreaks can occur.
经济和卫生状况得到改善后，竟然有可能导致较高的发病率，因为感染多发生在较高年龄的人群中，并可能发生大的疫情。
Designed by Jack Clements in 1986, the Solo or "sanitary lid," as it is officially called, can also claim art director and critic Steve Heller as a devoted fan.
1986年Jack Clements设计出了这种盖子，这种名为‘SOLO’或者正式名称叫“卫生杯盖”的盖子，让艺术总监及评论家Steve Heller成为它的忠实粉丝。
Diarrhoea can be prevented with exclusive breastfeeding and good hygiene and sanitary practices.
纯母乳喂养、良好的个人卫生和环境卫生习惯能预防腹泻。
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