proven effective through experience or hardship
通过经验或困难证明有效 (tongguo jingyan huo kunnan zhengming youxiao)
"She’s a battle-tested leader who knows how to stay calm under pressure."
"她是一位有经验的领导者，知道如何在压力下保持冷静。" (ta shi yi wei you jingyan de lingdao zhe zhidao ruhe zai yali xia baochi lengjing)
to monitor or see how someone or something is doing
to use one's influence or connections to get things done
to capture and punish someone for a crime
a small but essential part of a large system
a person who knows a lot about many subjects
to ensure that something is well taken care of by someone el...
