1. 今天到此为止：call back 再打电话 | call it a day 今天到此为止 | call it off 取消

2. 到此为止,就这样结束：38. Why all the trouble? 干嘛费那么大劲 | 39. Call it a day 到此为止,就这样结束 | 40. You won't regret it. 你不会后悔的

3. 结束,到此为止：by no means 一点也不,决不 | call it a day 结束,到此为止 | call off 取消

4. 就此结束,到此结束：call for directions 打电话问方向 | call it a day 就此结束,到此结束 | call off 取消

verb

1. stop doing what one is doing

e.g. At midnight, the student decided to call it quits and closed his books

Synonym: call it quits