Disaster movies often portray catastrophes that destroy, or at least threaten to destroy earth's entire population.
出自-2013年6月听力原文
And faculty members will be wary of any change that threatens the core curriculum in the name of moving students into the workforce.
出自-2012年6月阅读原文
Some argue that people are anxious and feel threatened by an inflow of new workers.
出自-2011年6月阅读原文