Altruism is not the tool for rational creature chasing their survival benefit but is the presupposition of the establishment of the human being's particular responsible subjectivity.

利他不是理性生物生存竞争的手段而是人类独特的责任主体性确立的前提。

youdao

Police helicopters are regularly used by forces chasing suspects on foot and in vehicles and can also be a vital tool in the search for missing people.

BBC: Police praise helicopter redeployment plan