但直到二十世纪初，建筑声学才正式成为一个科学领域。

But it was not until the beginning of the twentieth century that architectural acoustics became a scientific field.

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巴赫逝于1750年，但直到19世纪初，他的音乐天赋才得到充分认可。

Bach died in 1750, but it was not until the early 19th century that his musical gift was fully recognized.

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但就在2008年初，“我开始感到疲惫。”他回忆道。

But in early 2008, he recalls, "I just started to feel tired."

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But the question is how are those of us of this generation, living that ethic out in the early 21st century?

但问题是,我们这代人如何，将在21世纪初的生活中体现这一道德？

普林斯顿公开课 - 人性课程节选

But at the time period that we are examining, the period in which he writes Comus, the early 1630s, Milton seems very much interested in remaining virginal forever, avoiding even the sanctioned loss of virginity which is the state of marriage.

但在我们研究这段时期时，17世纪30年代初他写《Comus》的时期，弥尔顿似乎还对永远保持童贞非常感兴趣，甚至避开支持婚姻所必须经历的一个阶段,失去童贞。

耶鲁公开课 - 弥尔顿课程节选