87. Our efforts will pay off if the results of the research can be applied to the exploration of new technology.（能應(yīng)用于新技術(shù)的開發(fā)）

88. I can’t boot my computer now. Something must be out of order （一定出了毛病）with its operating system.

89. Leaving one’s job, no matter what/whatever it is, （無論是什么工作）is a difficult change,
even for those who look forward to retiring.

90. Compared with the place in which/where I grew up, （與我成長的地方相比）this town is more prosperous and exciting.

91. Not until he had finished the mission（直到他完成使命）did he realize that he was seriously ill.