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31. As drugs kill off the virus most susceptible to them, they leave behind the more resistant strains.

32. The trousers are not water resistant, but do dry very quickly when wet.

33. The risk of resistant strains of bacteria developing through complacent use of medicated feeds is high.

34. The numbers of damaging insect species resistant to pesticide have multiplied from 160 to 450 since 1960.

35. The germ, a strain of klebsiella which is resistant to most antibiotics, was found during routine screening.

36. The realignment of these societies was necessarily slow, their central value-systems resistant to change.

37. Both ordinary and thermal plasterboard are also available with a backing film which makes it resistant to water vapour.

38. Our conditioning can make us very resistant to using disclosure.

39. Using natural ingredients, which tend to grow on trees round here, they are both water resistant.

40. Not just resistant to the pitter patter of bored kiddie feet but immune to assaults from the outside as well.

41. Another parasitic protozoan is Myxobolus, this one causing fatal internal cysts and highly resistant to treatment.

42. Easier-to-clean materials include toughened glass which is non-absorbent, heat and impact resistant, but unkind to knives.

43. To improve the water resistant performance the flysheet seams can be sealed.

44. This is because thick lithosphere will tend to be more resistant to the effects of heat conduction and penetrative magmatism.

45. Long-term use has led to the growth of resistant strains.

46. Whenever possible, patients who do not respond to antibiotics should be screened for resistant strains.

46. Sentencedict.com is a sentence dictionary, on which you can find good sentences for a large number of words.

47. Such embryonic creatures needed stronger muscles, too, and a skin that was resistant to drying out.

48. The skill becomes increasingly resistant to stress influences and can be continued despite outside interference.

49. Polyester and polyamide yarns and fibres with ever-greater performance for competition suits as soft to the touch as they are resistant.

50. The first resistant strain was found within a year of its use and soon spread.

51. To that extent we shall have less input cost because by husbandry practice we shall get rid of resistant blackgrass.

52. Managers have been resistant, but there has been a strong latent demand for telework.

53. The species type is very resistant to disease and is used extensively as a stock root for budding bush types.

54. The problems seem especially daunting and highly resistant to correction, but that need not be the case.

55. What you get is a textile that is water resistant and well insulated.

56. Resistant strains of bacteria were detected soon after the widespread introduction of penicillin in the 1940s.

57. When introduced in test tubes, resistant enterococci read ily transfer their mutated genes for vancomycin resistance to staph bugs.

58. The thin cake was hard and resistant as a frozen rag.

59. The cover is lockable and theft resistant, with reinforced grommets that work with cable or bar locks.

60. These then combine with other oxygen molecules to form three-atom ozone molecules, resistant to ultraviolet radiation and able to absorb it.