The plumes apparently originate at great depths, perhaps as deep as the boundary between the core and the mantle, and many have been active for a very long time.
这些地幔柱显然起源于很深的地方，可能深至地核和地幔之间的边界，而且许多都已经活跃了很长时间。
Tom and Huck lay there for a very long time.
汤姆和哈克在那里躺了很长时间。
Because there are so many teams, it lasts for a very long time.
因为有那么多的球队，所以持续时间很长。
It's not known when Mars was found and by whom Mars has been known for a very long time, and one of the planets that can be seen from the Earth without a telescope.
在很长一段时间里，没人知道火星是什么时候被发现的，谁发现的，也不知道有一种行星可以不用望远镜就能从地球上看到。
He was unhappy when he sold his violin. After all, he had had it for a very long time.
卖掉小提琴时他很不高兴。毕竟，他拥有了这个小提琴好久。
Because the way sound waves operate, we have these low sound waves taking a very long time to clear.
因为声波的运作方式，我们需要很长时间才能清除这些低声波。
Turtles went back to the sea a very long time ago and, like all vertebrate returnees to the water, they breathe air.
海龟很久以前就回到了海里，和所有返回水中的脊椎动物一样，它们呼吸着空气。
If these rules are followed, the National Parks will be well kept and continue to give pleasure to many people for a very long time.
如果人们遵守这些规则，国家公园将得到良好的保护，并在很长一段时间内继续给许多人带来乐趣。
No-one answered, though he waited a very long time.
他等了很长时间也没有人来开门。
But it lasts for a very long time by quantum standards.
但以量子标准而言，已能够持续相当久的时间了。
Stuff you don’t use or haven’t used in a very long time. This includes
处理你平时不用或者很长时间不用的东西。
We've spent a very long time on things like language selection and network detection.
在语言选择和网络侦测上我们就花费了很多的时间。
The trouble had been brewing for a very long time, but Wall Street noticed quite late.
这个问题存在了很长的时间，但是华尔街发现的相当的晚。
For a very long time, the two key Spaces have been occupied by Motorola and Samsung.
在很长时间里，这两个关键空间都被摩托罗拉和三星占据着。
And for a very long time, that's what people with these types of injuries were told.
很长时间以来，这种脊髓损伤的人也正是被如此告之。
I think for the first time in a very long time, she feels as if she's with a grown-up.
我觉得这是长久以来第一次，她感到好像与一个成年人呆在一起。
The simplest is that you won't find whether you are right or wrong for a very long time.
最简单的是你不会发现，在长期中你是对是错。
If your deadline ends up being a very long time away, you might need to adjust your plan.
如果你制定出的截稿日期是很久以后，那么你或许应该调整一下计划。
“If this bill goes down,” he says, “it will be a very long time before we come back to it.
“如果这个法案失败了。”他说“要过很久才能重新回到这个议题上。
Web developers have been enamored of the relational database (RDBMS) for a very long time.
Web开发人员已经醉心于关系数据库(RDBMS)很长时间了。
Okay, so for most people, these are more wallpapers than one would need for a very long time.
好了，对大多数人来说，这些墙纸足够满足他们很长一段时间的使用需求了。
But as you saw from a little litany of key safety issues, they've been around for a very long time.
但是，如你们从关键的安全问题里看到，它们已经存在了很长时间了。
Frozen food remains edible for a very long time in the freezer, but once thawed, it spoils quickly.
在冷库中，冷冻食品在经过长时间保存后，依然可以食用。但是，一旦解冻，食品很快就腐烂了。
It's not the only cause of teen pregnancy, but it's one that we'd managed to miss for a very long time.
这并不是造成未成年人怀孕的唯一原因，但却是被我们刻意忽视了很长时间的因素。
I don’t rush home to my TV set just towatch a new episode, I’m patient and I can wait a very long time.
我不会急匆匆地冲回家只为看一集电视节目的首播，我很有耐心，可以等很长很长一段时间。
There's still, I fear, a substantial chance that unemployment will remain high for a very long time.
我担心，仍有很大的可能性：失业在相当长一段时间内会保持高位。
If we don't get drastic action soon, we may find ourselves stuck in the muddle for a very long time.
如果我们不立刻果断的行动，我们可能会发现，自己相当长时期内陷于困境。
If we don't get drastic action soon, we may find ourselves stuck in the muddle for a very long time.
如果我们不立刻果断的行动，我们可能会发现，自己相当长时期内陷于困境。
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