21. Enlarge=magnify (magnify means make something larger than it really is)

　　22. Complex=intricate (if something is intricate, it often has many small parts and details)

　　23. Lonely=solitary a. 孤独的 (if someone is solitary, there is no one near him/her)

　　24. Small=minuscule (very small), minute

　　25. Praise=extol (stronger than praise), compliment (polite and political)

　　26. hard-working=assiduous (someone who is assiduous works hard or does things very thoroughly)

　　27. Difficult=arduous (if something is arduous, it is difficult and tiring, and involves a lot of efforts)

　　28. Poor (soil) =barren n.荒地, infertile (used to describe the soil is so poor that plants cannot be planted on it)

　　29. Fragile=brittle a.易碎的，脆弱的, vulnerable (someone who is vulnerable is easily hurt emotionally or physically)

　　30. Show=demonstrate (to demonstrate a fact means to make it clear to people.)

　　31. Big=massive (large in size, quantity, or extent), colossal (use this word, you emphasize something is large), tremendous (INFORMAL)

　　32. avoid=shun(if someone shuns something, s/he deliberately a.故意的 avoid that something or keep away from it.)

　　33. Fair=impartial (someone who is impartial is able to give a fair opinion or decision on something.)

　　34. Attack=assault (physically attack someone), assail (attack violently)

　　35. Dislike=abhor (abhor means you hate something to a extreme extent for moral reasons), loathe (dislike very much)

　　36. ruin v.使破产，使毁灭 n.毁灭=devastate(it means damage something very badly, or utterly a.完全的，彻底的 destroy it.)

　　37. Disaster=catastrophe (a catastrophe is an unexpected event that cause great suffering and damages)

　　38. finally=eventually(especially after a lot of delays), ultimately adv.最后，终于(after complicated series of events)

　　39. Always=invariably (the same as always, but better than always)

　　40. Forever=perpetual (a perpetual state never changes), immutable (something immutable will never change or be changed)