1. 时时：249. for ever 永远 | 250. ever and again 时时 | 251. ever before 以前

2. 不时地; 时时地：be oneself again (身体或精神)恢复正常 | ever and again 不时地; 时时地 | as long again as 比...长一半

3. 时时,不时地,不断地：He swore he'd eventually be / get even with them. 他发誓最终要跟他们算账. | ever and again时时,不时地,不断地: | He wrote me ever and again since his departure. 自从他走后,他不断地给我写信.