unhealthy ♦︎ bad ♦︎ unhygienic ♦︎ insanitaryThese words all describe sth which is a risk to health, especially because it is not clean.这些词均表示损害健康的、不清洁的、不卫生的。PATTERNS AND COLLOCATIONS 句型和搭配◆an unhealthy / a bad diet◆unhealthy / unhygienic / insanitary conditions■unhealthyhaving a bad effect on your health; likely to make you ill损害健康的;对身体有害的;会致病的◆Doctors say too many teenagers adopt an unhealthy lifestyle.医生说有太多青少年的生活方式不健康。◆The unhealthy climate made it an unattractive place in which to settle.不利于健康的气候条件使得这里成为不宜居住之地。OPPhealthy ⇨ healthy see also unhealthy ⇨ sick1■badhaving a bad effect on your health损害健康的;对身体有害的◆Eating too much salt is bad for you.摄入过多的盐有害健康。◆All those sugary drinks are bad for your teeth.所有那些含糖饮料都会损害牙齿。◆Bad diet and lack of exercise can lead to serious health problems.不良饮食和缺乏锻炼会导致严重的健康问题。OPPgood ⇨ healthyNOTE辨析 Unhealthy or bad?Bad is used especially in the collocations bad for you/your health, etc. and bad diet. Unhealthy has a wider range of collocations, but is slightly more formal. * bad尤用于短语bad for you/your health等和bad diet。unhealthy稍正式些,搭配词的范围较广。■unhygienicˌʌnhaɪˈdʒiːnɪk, NAmE usually ˌʌnhaɪˈdʒenɪk (ratherformal) not clean and therefore likely to cause disease or infection不清洁的;不卫生的;易致病(或感染)的◆The animals were kept in cramped and unhygienic conditions.那些动物的饲养环境狭小且不卫生。OPPhygienic ⇨ cleanadj.■insanitaryɪnˈsænətri; NAmEɪnˈsænəteri (especially BrE) (NAmE usuallyunsanitaryʌnˈsænətri; NAmEʌnˈsænəteri) (formal) unhygienic不清洁的;不卫生的;易致病(或感染)的◆The apartments where the workers are housed were overcrowded and insanitary.安置那些工人的公寓拥挤不堪且很不卫生。