Radical (基础的，根本的) = fundamental (radical = drastic)
Rather than = instead of
refine
Remedy (治疗)= cure,
rigorous schedule = demanding
(rigorous 严格的，严厉的 demanding 要求高的，苛求的 如 ：a demanding job )
Rival = competitor
"ramification"--consequence;
ramification--consequence
redundancy
remarkable--incredible
revolutionous--quick discarding
revolutional --quick discarding/(我选了change，回来查字典发现我错了)
revolution--dramatical change
rigorous--demanding.
refreshing--unusual
relevant adj.有关的, 相应的
ritual n.典礼, (宗教)仪式, 礼节 adj.典礼的, (宗教)仪式的
rupture--burst
radical--extreme
remote--far away