documentary letter of credit

例句：

1. 1. The documentary about thehistory of the city is fascinating.
   关于这座城市历史的纪录片非常吸引人。
2. 2. The documentary was madeto raise awareness about environmental issues.
   这部纪录片是为了提高人们对环境问题的意识而制作的。
3. 3.The documentary will be shown on TV tonight.
   这部纪录片将于今晚在电视上播出。
4. 1. I need to write a letterto my friend.
   我需要给我的朋友写一封信。
5. 2. He sent me a letter with hisregards.
   他寄给了我一封带有问候的信。
6. 3.The letter was written in a formal tone.
   这封信的语气很正式。