10年12月四级翻译答案（新东方）：
87. To ensure that he can attend the meeting
88. is said to have been built
89. without the distinct environment of the earth
90. What impressed the tourists most
91. I return the book to the library
87. To ensure that he can attend the meeting
88. is said to have been built
89. without the distinct environment of the earth
90. What impressed the tourists most
91. I return the book to the library
