Up till that time 到那时候为止
Up till that time, there is no heavy industry in that country.
到那时为止,该国还没有重工业。
A long time he sat there, till he discovered that Heidi was watching him.
他在那里坐了很长时间,直到他发现海蒂在看着他。
Her courtship story reflects the social norms of her time: monogamy and matrimony, not necessarily in that order, but certainly till death do us part.
她的求爱故事反映了她那个时代的社会规范:一夫一妻制和婚姻对于人们来说并不是必须的,却直到死为止都是我们必须遵守的原则。
Typically up till now, we've looked at things that can be done in sublinear time. Or, at worst, polynomial time. We'll now look at a problem that does not fall into that. And we'll start with what's called the continuous knapsack problem.
至今为止我们已经处理过,亚线性问题,最多也就是多项式问题,我们现在要看的问题则是不能用这些解决的,我们将要开始讲连续背包问题。
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