[, ]a thing that makes you able to achieve or understand sth 关键；要诀◆In our industry, the key to success is minimizing costs. 在我们这个行业，成功的关键是减少成本。◆This plan holds(= is)the key to development in the region. 这个计划是这一地区发展的关键。◆(especially NAmE) The key is to work as a team. 关键是要大家互相合作。
[] any of the buttons that you press to operate a computer （电脑的）键◆Press the escape key to quit the program. 按退出键退出程序。
Alt key control key escape key hot key scroll key shift key