Europeans did not know of them until the 1500s, when Portuguese ships arrived on the coast of what is now Sierra Leone.

直到16世纪，当葡萄牙的船只抵达现在的塞拉利昂海岸时，欧洲人才知道它们的存在。

youdao

My grandfather Ruby once told me that time is the most precious commodity; I never understood what he meant until 2002.

我的祖父鲁比曾对我说过，时间是最贵重的商品；直到2002年，我才明白他的意思。

youdao

Usually what happens is that people eye each other until they are about eight feet apart, at which point both cast down their eyes.

通常情况下，人们会互相注视直到彼此相距约8英尺，这时两人都会低头看向地面。

youdao

What you want to do is heat your base bead until it's that honey-like consistency.

VOA: special.2009.05.18

Until that point, we have no reason to really give up on our current existing ideas about what justice is.

直到完全了解，我们没有理由放弃,我们目前现存有关正义的概念。

耶鲁公开课 - 政治哲学导论课程节选

I think this is what the Treasury Department says, that they are kinda busy with other things until then.

想必财政部会托词说，他们到那时才有时间。

斯坦福公开课 - 经济学课程节选

"My feeling is until we know what is there, we shouldn't mess with it, " he said.

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On another note, I would like to say in an intellectual sense, college is like dating, full of experimentation, and going out and trying lots of different things until one finds what is truly important and necessary for them in a long term relationship.

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All of a sudden your properties would look relatively cheap for their size, that is until customer walkthroughs reveal that what is 16, 000 square feet in nominal terms is really only 4, 000.

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