“make up one’s mind”意为“立志, 下决心”。 I made up my mind to be a professional dancer and practiced for hours every day. 我立志要成为专业舞蹈演员,每天练习好几个小时。 “come to a decision (about sth)” Come to/reach/make a decision意为“做出决定”。
We must come to a decision about what to do next by tomorrow. 我们必须在明天之前决定下一步做什么。 “set one’s mind to do sth (on doing sth)” 意为“下定决心做某事”。
Once Kate sets her mind on something, she doesn’t rest until she’s done it. 凯特一旦下定决心做某件事,不做完她是不会休息的。