Infection with head lice is no reflection on personal hygiene.头上生虱子并不说明不讲个人卫生。She's careless about her hygiene.她不注意个人卫生。In the interests of hygiene, please wash your hands.为了卫生，请洗手。...
Good hygiene helps to minimize the risk of infection.保持清洁有助于最大限度地减少感染的危险。...men who take as much trouble over personal hygiene as women.像女人一样不嫌麻烦打理个人卫生的男人She's careless about her hygiene.她不注意个人卫生。Poor hygiene led to...
the advent of new technology新技术的出现Swallows come by groups at the advent of spring.春天来临时燕子成群飞来.The advent of the Euro will redefine Europe.欧元的出现将重新定义欧洲....
使用牙刷去除牙垢很有帮助.The use of a toothbrush to keep tartar down is very helpful.除牙垢用带尖工具除去牙齿表面的 ( 污垢 )To remove ( tartar ) from tooth surfaces with a pointed instrument.我的牙齿上有许多牙垢.I have a lot of tartar on my teeth....