Knowledge has bitter roots but sweet fruits

Knowledge has bitter roots but sweet fruits SOS：谁能围绕“knowledge has bitter roots but sweet fruits”提供演讲稿,时间为一分钟, Knowledge has no has no knowledge of knowlege has bitter roots but sweet fruits. Although again sweet candy,also has a bitter day. He has a wide knowledge of history knowledge 英语翻译用this kind of plant has bitter root but sweet fruit可以么? The medicine has a bitter t___.I don't want to take it. Although again sweet candy, also has a bitter day什么意思 slightly bitter 英语翻译bitter Our life has a limit,but knowledge is without limit as,he,knowledge,as,well,experience,has连成一句话 as,he,knowledge,as,well,experience,has连成一句话 英语翻译Wilbur Ross Jr.has echoed Zuckerman’s anger over the bitter struggles faced by middle-class Americans. 请问Bitter City , Bitter Life怎么翻译?