We have what at first seems like a pretty attractive theory, but then, how do you explain the fact that this has happened before?
我们提出了一开始看起来很有吸引力的理论，但是接下来，你要如何解释以前也发生过这种情况呢？
All this has happened because you couldn't be bothered to give me the message.
就是因为你嫌麻烦没通知我，才出了这事。
He thinks his heart is going to stop because he can't possibly know how this has happened.
他认为他的心脏要停止跳动了，因为他不可能知道这是怎么发生的。
It wouldn't be the first time this has happened in the U.S..
类似案件已经不止一次在美国发生了。
This has happened on a large scale in at least Egypt, Syria and Libya.
至少在埃及、叙利亚和利比亚都大规模的发生。
"This has happened every month since 1996 and I've gotten used to it, " she said.
“自从1996后，这种情况每月都发生，我已经习惯了。”她说。
Caller: No, but this has happened to me before and I'm sick and tired of it!
求助者：没有，但这事儿以前也发生过，我已经烦透了。
We're very embarrassed this has happened. We were shocked that this happened.
这起事件的发生让我们很尴尬，也很震惊。
We don't know the full details but it does seem bizarre that this has happened.
我们不知道全部的细节，但这件事的发生看起来很奇怪。
All this has happened not in spite of our plan to cut the deficit, but because of it.
所有这一切的发生并非与我们削减赤字的计划无关，而是因它而产生。
This has happened three times to date, and in each case the drives were briskly located.
到目前为此，这种情况出现过三次，每次都能很很轻松地发现硬盘的位置。
He thinks his heart is going to stop because he cannot possibly image how this has happened.
他觉得心脏都要停止跳动了，他甚至不能相信这是怎么发生的。
We're sorry that this has happened, and l guarantee that the same mistake won't happen again.
我们为这事感到很抱歉，我保证再不会发生同样的错误。
If this has happened to you with any people in your life, then it might be time to let them go.
要是你的生活中有这样一些人，或许是该让她离开了。
This has happened at least a dozen times over the past few decades and it will probably happen again.
在近几十年，这样的事情已经发生了十多次了，而且将来可能还会继续发生。
He said that there have been a number of missing child cases in Britain where this has happened.
他说，在英国的诸多失踪儿童案件中，这种情况发生过。
I have people that I know that this has happened to, and we have absolute evidence of this happening.
我知道有过此种经历的人，并且诶对此我们有着确凿的证据。
This has happened for thousands of years history of countless times countless facts have proved pieces.
这已为长达数千年来发生的无数次无数件的历史究竟所证实。
All this has happened since August not in Kabul or Baghdad but in Monterrey in northern Mexico (see article).
这不是喀布尔，也不是巴格达，八月以来，这一切都发生在墨西哥北部的蒙特雷。
"This isn't the first time that this has happened," says Pastor William, who heads the burnt one-room church.
“这已不是第一次发生这样的事情了。”PastorWilliam朝着被烧毁的单间教堂说。
Don't worry if you do because this has happened all of us at least ones, for now enjoy these top 32 funny photos!
如果你是，不用担心，因为我们大家多少都对动物起过爱心。现在请对最有趣的32幅动物图片泛滥你的爱心！
Growth forecasts ended the year higher than at the start of the year, the first time this has happened since 2000.
2000年以来头一遭年末增长预测超过了年初。
This was the second quarter in a row that consumer spending had waned, the first time this has happened since 1995.
这是连续第二季度消费支出下降，这种情况是1995年以来第一次出现。
German consumer spending fell for the fourth quarter running, the first time this has happened since at least 1960.
德国消费支出在第四季度运营期间下跌更是自1960年以来的首次触礁。
This has happened only once before since the late 1950s-in March 2003, which proved to be the start of a long rally.
这在1950年代晚期以来还是首次发生——上一次发生在2003年3月，紧随其后的是一波长期牛市。
This has happened to me a few times, such as with a phone ringing or the kids making too much noise in the next room.
我有过这样的经历，主要是由于电话铃声或是小孩子的喧哗。
And this has happened with apps: advertising – to which apps users are exposed – bankrolls both Apple and the developers.
这一点已经在app上发生：广告——app用户将会接触到的那些广告——同时补贴苹果和开发者。
This has happened; there are now hundreds of open-source Perl modules that implement the SAX 2.1 binding (see Resources).
这一点已经实现，现在有数百个开放源码的Perl模块实现了SAX 2.1绑定（请参阅参考资料）。
This has happened; there are now hundreds of open-source Perl modules that implement the SAX 2.1 binding (see Resources).
这一点已经实现，现在有数百个开放源码的Perl模块实现了SAX 2.1绑定（请参阅参考资料）。
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