also far out, 1887, "remote, distant;" from adverbial phrase, from far (adv.) + out (adv.). Slang sense of "excellent, wonderful," is from 1954, originally in jazz talk.
权威例句
1. The plan is good; the problem is it doesn't go far enough.
计划不错;问题在于不够深入。
2. The plane has been kept in service far longer than originally intended.
这架飞机已经超期服役很长时间了。
3. He had wandered to the far end of the room.
他转到屋子的那一头。
4. "Does it sound like music?" — "I wouldn't go that far."