81.相反 in contrast / on the contrary.
82.代替 replace/ substitute / take the place of
83.经不起推敲 cannot bear closer analysis / cannot hold water
84.提供就业机会 offer job opportunities
85.社会进步的反映 mirror of social progress
86.毫无疑问 Undoubtedly, / There is no doubt that……
87.增进相互了解 enhance/ promote mutual understanding
88.充分利用 make full use of / take advantage of