We need to be concerned about the environmental impacts of all this construction.我们需要考虑到这样施工对环境的影响。The government is reported to be concerned about the growing insurgency in the south.据报道，政府对于南方日益扩大的叛乱局势深感焦虑。We need to be concerned about his rise to power. Equally, the influence of his opponents cannot be ignored.我们要关注他的掌权。同时，也不能忽略他的对手们的影响力。