求用英文解释几个单词!1.Tariffs 2.Currency Fluctuation 3.Investment Regulations 4.Environmental Restrictions 5.Foreign Relations and Trade Sanctions 6.Safety Regulations 7.Immigration Policies请求用英文解释这几个单词！回答者感激不尽。（强调不是中文翻译喔！）
问题描述：
求用英文解释几个单词!
1.Tariffs
2.Currency Fluctuation
3.Investment Regulations
4.Environmental Restrictions
5.Foreign Relations and Trade Sanctions
6.Safety Regulations
7.Immigration Policies
请求用英文解释这几个单词！回答者感激不尽。
（强调不是中文翻译喔！）
答