《cycle of activity》阅读赏析
Weallknowthatthenormalhumandailycycleofactivityisofsome7-8hourssleepalternationwithsome16-17hourswakefulnessandthat,broadlyspeaking,thesleepnormallycoincideswiththehoursofdarkness.Ourpresentconcernisw...
相关cycle的精选知识
“雅思写作”the Growth Cycle of A Volcanic Island
Thediagramshowsthegrowthcycleofavolcanicisland.Thediagramdemonstratesthenaturalprocessintermsofhowavolcanicislandgrowsfrombeneaththesea,explodes,andtheneventuallysinkstobecomeanunderwaterreef,whichinv...