Single-minded
single-minded /ˈsɪŋgəlˈmaɪndɪd/
adj. 专心致志的，一心一意的，心无旁骛的
It means that someone has only one aim or purpose and is determined to achieve it.
它指的是某人只确定了一个目标，并决心实现它。
You'd better be single-minded about your dream, and I'm sure you will make it soon.
你应该专注于自己的梦想，我相信你很快会成功的!
Tom is very single-minded about his career.
Tom一心专注于自己的事业。
