WordexplanationUnit1Natureinthebalance

harmn．vt.伤害，损害英/hɑ?m/→___________adj.有害的→____________adj.无害的harmfulharmlessdoharmtosb./sth.＝dosb./sth.harm对某人/某物造成伤害Thereisnoharmin(ones)doingsth.＝Itdoesnoharm(forsb.)todosth.(某人)做某事并无害处beharmfulto...对……有害Playingcomputergameswillnotonly____________yourphysicalhealth,butitisalso____________toyourmentalhealth.Sothereisnoharminadvisingyoutogiveitup.玩电脑游戏不仅对你的身体健康有害，而且对你的精神健康也有害。所以劝你戒掉也无妨。doharmtoharmfulbebadfor...

regionn.地区，区域；行政区英/?ri?d??n/→_____________adj地区的，局部的，当地的regional

continentn．大陆；大洲/?k?nt?n?nt/→_______________adj.大陆的；大洲的continental英/?k?nt??nent(?)l/

length

n.长，长度；时间的长短；篇幅，（电影）片长/le?θ/inlength长度atlength最后，终于；详细地atarmslength以一臂之距Theredruleristhreetimesaslongastheyellowone.→Theredruleristhreetimesthelengthoftheyellowone.红尺子是黄尺子的三倍长。lengthenvt.（使）变长英/?le?θ?n/adj-n-vlong-length-lengthen（使）变长wide-width-widen加宽high-height-heighten提高deep-depth-deepen加深

biodiversityn.生物多样性?[?U]?/?ba???da??v??s?ti/→_________/da??v??s?ti/n.多样性,多样化;差异（性）；不同（点）[?U]→?_____________?/da??v??s/adj.不同的；相异的；多种多样的diversitydiverse

nutn.坚果/n?t/ahard/toughnutahard/toughnut(tocrack)难对付的人；难说服的人棘手的问题；不好对付的情形

varietyn.不同种类；变化，多样性；变种，变体/v??ra??ti/→variousadj.各种各样的→varietyn．变化；多样(化)；多变(性)→varyvi.vt.变化avarietyof/varietiesof种种；各种各样的Thetrainingscheduleincludesjoininginavarietyofactivities...训练日程包括参加各种各样的活动...=__________activitiesTherearevarious(way)ofdoingthisjob.waysvarious

Manyvarietiesofnaturalsoaps___________(sell)atthemarket.Thevarietyofgoodsinthisshop_______(be)rich.varyfrom...不同于...varywith...随着...变化aresoldis

massn大量，团，快，一大群adj大批的，广泛的amassof/massesof大量的（+可数n复or不可数n，作主，谓语动词与of后n保持一致）一堆石块阻挡了他们的路。Amassofrocks_______theirroad