But when we analyze these cells chemically, we find something very interesting, a chemical in them, an enzyme called telomerase.
但当我们用化学方法分析这些细胞时，我们发现了一些非常有趣的东西，其中有一种化学物质，是一种叫做端粒酶的酶。
I am writing to tell you that we were quite disappointed with your service. We had booked a table, but when we went there at the time as arranged, only to be told there were no seats available.
我想写信告诉你，我们对你的服务非常失望。 我们已经预订了一张桌子，但是当我们按预定的时间去那里的时候，却被告知没有座位了。
As they grew more mobile, we let them move freely around the house during the day, but when we were asleep we had to contain them in a large room, otherwise they'd get up to mischief.
随着它们越来越好动，白天我们让它们在家里自由活动，但当我们睡觉时，我们必须把它们关在一个大房间里，否则它们就会胡作非为。
But when we get there, we'll release it.
但当我们成功时，就会发行它。
But when we got there, the hotel had never heard of us.
但当我们赶到那里，酒店却根本没有听说过我们。
But when we reached street level, she could not get me out.
但是，当我们达到街面，她不能把我弄出去了。
But when we thought of Ingleside we knew it was the right one.
但当我们想到壁炉山庄的时候我们都觉得它就是最合适的了。
But when we apply that knowledge to ourselves, what do we learn?
但是，当我们将这种知识应用于我们自身时，我们学到了什么呢？
But when we project ever in the future, we forget everything we have.
但是，当我们计划尚在未来的事情时，我们忘记了自己所拥有的一切。
We want to fight, but when we make a plan to attack, Alambo always says no.
我们想战斗，但当我们制订了攻击计划时，阿拉姆博总是说不。
But when we deal with games of chance, we want something a little better.
但是在处理机率游戏时，我们需要一些更好的实现。
But when we arrived nobody knew we had to protect anything; we had to deforest.
但我们刚到这里的时候没有人想到我们要保护些什么；我们不得不伐林。
But when we did the Holy Grail we knew it was a good story that everyone recognises.
但是当我们演绎《圣杯》时，我们发现这是一个每个人都认可的好故事。
But when we are asleep it is chaotic, non-linear, without rules, often without sense.
沉睡时，梦杂乱无章，非线性，没有规矩，没有理性。
But when we begin to use PHP for these purposes, we must also consider our memory usage.
但是当我们出于这些目的开始使用php时，我们也必须考虑内存使用情况。
But when we came right back to the previous station, I could remain indifferent no longer.
但是当我们又回到了终点站的前一站时，我再也不能置之不理了。
But when we say "person," it also — that's more general — it also includes corporation.
但“法人”这个词，更加广义，也指代公司。
But when we think about where anti-bonding orbitals should be, it should be higher in energy.
但当我们讨论反键轨道的时候，它的能量应该更高。
But when we start to question our fears, we begin to realize they are not the final authority.
但当我们开始质疑我们的惧怕时，就开始发现，惧怕不是决定性的。
We dropped her off in the lingerie department, but when we returned, we couldn't find her.
我们把她送到女内衣部，在那儿分手，但当我们回来找她时，却找不见她。
But when we trust in the hands of a Greater Power, our life's work truly can be beautiful.
但是，如果我们相信大师的力量，我们的生活就会变的非常美丽。
We usually get over it in seconds, but when we were younger the bad blood would last for weeks.
我们通常一会儿就没事了，但在年轻血气方刚时，就可能会持续几星期。
But when we were greeted by a familiar face, Dr Wilson, I felt like I had come full circle.
但是，当一张熟悉的面孔映入眼帘，我看到威尔逊博士的时候，我觉得自己兜兜转转回到了原点。
But when we were greeted by a familiar face, Dr Wilson, I felt like I had come full circle.
但是，当一张熟悉的面孔映入眼帘，我看到威尔逊博士的时候，我觉得自己兜兜转转回到了原点。
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