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

人類學會用鐵制造工具的時代稱為鐵器時代。

59. I haven't seen you for ages.

我好久沒見到你了。

60. Anxiety ages us.

憂慮催人老。

61. He came here two years ago.

他兩年前來到這里。

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

我覺得這是個合理的建議，但他不同意。

63. We agreed to leave at once.

我們同意立即離開。

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

幾個證人的陳述并不一致。

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

在學習一種新語言時，詞典是非常有用的工具。

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

我們在調查的過程中得到警方的大力協助。