我目送汽车，直到看不见为止。
I watched the car until it was out of sight.
直到那时她才意识到他所承受的压力。
Only then did she realize the stress he was under.
那场比赛直到下半场才精彩起来。
The game didn't liven up till the second half.
我们要探索一切途径，直到找到答案为止。
We will explore every avenue until we find an answer.
她直到临终那天一直保持着思维和理解能力。
She retained her mental faculties until the day she died.
她上了楼，直到第二天早晨才再次露面。
She went upstairs and did not reappear until morning.