hard line
noun [ S ] uk/ˌhɑːd ˈlaɪn/ us/ˌhɑːrd ˈlaɪn/
强硬路线（或态度）
the fact of being very severe, for example in refusing to allow something or to give people what they want
The government wants to take a hard line against the strikers. 政府想对罢工者采取强硬手段。