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重点讲解：
1. be in danger of 面临...的危险
The building is in danger of collapsing.
这栋建筑有垮塌的危险。
2. bring attention to... 吸引...的注意
The incident has brought attention to the issue of rules for mobile service businesses.
这一事件引发了人们对移动业务规则问题的关注。
3. a lack of 缺乏
Some teachers felt hindered by a lack of resources.
有些教师因资源不足而感到困难重重。
4. a state of emergency 紧急状态；紧急状况
The government decreed a state of emergency.
政府下令进入紧急状态。
