可持续增长的关键是不断改进并适应变化的环境。
The past is never dead. It's not even past.
"The past is a foreign country; they do things differently there."
解释:处在有利的地位上想到道义,处在困难之中想到保持纯正。
The key is to set realistic customer expectations, and then not to just meet them, but to exceed them — preferably in unexpected and helpful ways.