It is hygienic whilst reducing the time needed to clean it.词性分析It is hygienic whilst reducing the time needed to clean it.请问句中whilst是连词还是副词?为什么后面的动词reduce要用doing形式呢?

It is hygienic whilst reducing the time needed to clean it.词性分析It is hygienic whilst reducing the time needed to clean it.请问句中whilst是连词还是副词?为什么后面的动词reduce要用doing形式呢? HYGIENIC MODERNITY怎么样 clean and hygienic hands hygienic toilet应该怎么翻译? Hygienic Spry的中文是什么意思 clean,sanitary ,healthy和hygienic有什么区别You should use cotton wool to clean the wound.It's much more-----.你应该用 棉花羊毛（?） 来清理伤口.这比较卫生（?）.选sanitay和hygienic中哪一个啊? sorry i .m busy now ,whils in touch with 固体废弃物方面的英文翻译Sanitary landfills An alternative to landfills which will solve the problem of leaching to some extent, is a sanitary landfill which is more hygienic and built in a methodical manner. These are lined with materials 英语翻译Traffic rules which school children should abide by1.Stop at the red light and walk when it turns green.Don’t run a red light.2.Walk along the pavement.3.Take the zebra crossing,pedestrian overpass or underpass to cross the rood.4.Whils It is(). it is it is is it it is Is it it is It is it is