/dɪˈskreʃn ||; dɪˈskrɛʃən/noun [U]:
1 the freedom and power to make decisions by yourself 自己作主的自由和能力: You must decide what is best. Use your discretion. 你必须自己作主，决定怎样做最好。
2 care in what you say and do so as not to cause embarrassment or difficulty for sb 谨慎，慎重（以免出现尴尬局面或困难）: This is confidential but I know I can rely on your discretion. 这是机密的，但我知道我可以相信你不会说出去。 ☞adjective discreet 形容词为discreet
at sb's discretion depending on what sb thinks or decides 由某人决定:
Pay increases are awarded at the discretion of the director. 加薪由主任决定。