直到那时英语：until then; till then; only then。
双语例句：
直到那时，我才真正意识到教育是多么昂贵。Up until then, I hadn't truly realized just how expensive an education can be.
直到那时我才注意到那个男孩什么也看不见。It was not until then that I noticed the boy could see nothing.
直到那时我才开始了解到有关约翰的一些令人难以接受的实情。It was only then that I began to learn the unpalatable truth about John.
直到那时，Leah一直遵循着衡量成功与否的传统标准。Up until that point, Leah had followed traditional measures of success.
我将在今后的专栏文章中修正XM这方面的问题，但直到那时我才可能避免陷入本项目中相同的陷阱。I'll fix this aspect of XM in a future column, but until then I might as well avoid falling into the same trap with this project。
为SSD交换附加一个更高的优先级使其可以使用直至耗尽；直到那时，页面才能被写入优先级较低的交换分区。Attaching a higher priority to the SSD swap allows it to be used until exhausted; only then would pages be written to the lower-priority ( slower) swap partition.