58. The period in which man learnt to make tools of iron is called the Iron Age.

人类学会用铁制造工具的时代称为铁器时代。

59. I haven't seen you for ages.

我好久没见到你了。

60. Anxiety ages us.

忧虑催人老。

61. He came here two years ago.

他两年前来到这里。

62. I thought it was a reasonable proposal, but he didn't agree.

我觉得这是个合理的建议，但他不同意。

63. We agreed to leave at once.

我们同意立即离开。

64. The witnesses' statements just don't agree with each other.

几个证人的陈述并不一致。

65. A dictionary is an invaluable aid in learning a new language.

在学习一种新语言时，词典是非常有用的工具。

66. We were greatly aided in our investigation by the cooperation of the police.

我们在调查的过程中得到警方的大力协助。