The troops are on a mercy mission (= a journey to help people) in the war zone.
部队出发救助战区民众。
《牛津高阶英汉双解词典》
Assisting the Strategic Marketing Manager in formulating long term development plan in China.
协助战略市场经理制定中国市场长期发展规划.
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这时息孟派精兵两千来助战,同时还赠送金银和大批武器.
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