That can have economic impact on a country and its airlines, and the threat of a Category 2 downgrade can prompt improvement.
这会对一个国家及其航空公司产生经济影响,而二类国家会面临降级的威胁,这可以促使航空公司改善其安全性。
Decide the frequency, impact and types of touch points you want for each level or category of customer.
决定对每个层级的客户所进行接触的频率、强度和类型。
Photochemical Ozone synthesis is the most important environmental impact category in both methods.
在各类环境影响类型中,光化学臭氧合成是两种方案的最主要影响类型。
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