hitherto

About how it's larger than anyone had hitherto known.

你的亲戚可比公众知道的要多

He could destroy life on a scale hitherto undreamt of.

他能以此前无法想象的方式毁灭生命

And hitherto his task has been to observe, whilst posing as a fellow radical.

他一直在受命悄悄觀察 假扮成一個激進派

But to their surprise, the research team found that the fat cells were also manufacturing a hitherto unknown hormone, leptin.

让他们感到惊讶的是 研究小组发现 脂肪细胞也会产生一种 迄今为止从未发现过的激素 瘦蛋白

We've hitherto tried to answer that question by assuming that there must be genes which explain it, but those genes have not come forward and there isn't any particular reason why they will.

我们迄今一直通过假设肯定有基因能解释 来试图解答这个问题 但这些基因迟迟没出现 也没有理由相信它们将来会出现

I'd written, drawing his attention to a hitherto unnoticed factor in the rise in crime, namely the number of policemen these days who wear glasses.

我写信希望他注意到一个迄今未被人重视的 导致犯罪激增的因素 近来戴眼镜的警员人数越来越多了

My first impression, when I saw the work, was the kind of delight when a surprise comes your way and you feel that somebody, hitherto undiscovered, suddenly makes their work available and it looks good.

我对这些作品的第一印象 是惊喜降临时的那种喜悦 你感到一个无名之辈 带着他上乘的作品横空出世