Sawdust was used as a hygienic floor covering.锯屑曾被用来铺在地上保持地面清洁卫生。Food must be prepared in hygienic conditions.食物必须在卫生的环境中制作。It's more hygienic to use disposable paper tissues.使用一次性餐巾纸更为卫生....
It's more hygienic to use disposable paper tissues.使用一次性餐巾纸更为卫生.Food must be prepared in hygienic conditions.食物必须在卫生的环境中制作。...a white, clinical-looking kitchen that was easy to keep clean and hygienic.易于保持清洁卫生的、像诊所般...