The president appears likely to change course on some key issues.
总统看起来可能要在某些重要问题上改变方针。
《牛津词典》
2
One key indicator of change in the environment surrounding these prehistoric settlements is the wood that was used there.
这些史前定居点周围环境变化的一个关键指标是当地曾使用的木材。
3
Furthermore, in the effort to feed the hosts of people on this planet, the focus on factory and intensive farming methods is being cited as a key factor in climate change.