1. They ended the discussion on a note of optimism. 他们在乐观的调子中结束了讨论。
2. Yes, at the end of the day. 对的。在今天活动结束的时候。
3. Loneliness, hopelessness search the end of time. 孤独，绝望，寻觅到时间的尽头。
英英解释
n.
1. either extremity of something that has length
2. the point in time at which something ends
3. the concluding parts of an event or occurrence
4. the state of affairs that a plan is intended to achieve and that (when achieved) terminates behavior
5. a final part or section
6. a final state
7. the surface at either extremity of a three-dimensional object
8. (football) the person who plays at one end of the line of scrimmage
9. one of two places from which people are communicating to each other
10. a boundary marking the extremities of something
11. the part you are expected to play
12. the last section of a communication
13. a piece of cloth that is left over after the rest has been used or sold
14. a position on the line of scrimmage v.
1. have an end, in a temporal, spatial, or quantitative sense; either spatial or metaphorical
2. bring to an end or halt
3. be the end of; be the last or concluding part of
4. put an end to
