这是一个很严肃的问题。
This is a serious problem in itself.
这是一个严重的问题本身。
For the Alps this is a serious problem.
对阿尔卑斯山来说，这是个严重的问题。
In my opinion, this is a serious problem.
在我看来，这是一个严重的问题。
This is a serious problem we must think about.
这是一个值得我们深思的问题。
But, I have to say that this is a serious problem.
但是，我不得不说这是一个严重的问题。
There is awareness that this is a serious problem.
人们已注意到这是一个严重的问题。
This is a serious problem of which I am well aware.
这是个很大的问题，我是意识到这个问题的。
This is a serious problem of which I am well aware.
我未曾意识到问题的严重程度。
This is a serious problem of which I am well aware.
我多年来就意识到这个问题。
In the world of academic research, this is a serious problem.
在学术界，这是一个严重的问题。
Marisa: You're right... This is a serious problem we have to fix.
魔里沙：对…这是我们要解决的难题。
This is a serious problem, because product information helps people make purchasing decision.
这是个严肃的问题，因为产品信息有助于让人们下定购买的决心。
This is not a serious problem, and it should be ignored.
这不是个严重问题，并且应该忽略它。
Social Juvenile delinquency is a serious social problem in this country.
少年犯罪上这个国家一个严重的社会问题。
He said: This is not a serious problem.
他说：这并不是一个严重的问题。
This is a very serious problem, do you agree?
这是一个非常严重的问题，你同意么？
Juvenile delinquency is a serious social problem in this country.
少年犯罪是这个国家一个严重的社会问题。
However, this is not a serious problem.
然而，这不算什么严重问题。
No. If this is a clotting problem, it could be very serious. All right?
不行，如果真的是凝血问题可能会很严重，明白吗？
In my opinion, this phenomenon is a serious problem needs to be solved.
在我看来，这是一个需要解决的严重问题。
Piracy is a serious problem with which this country is confronted.
盗版是一个严重的问题，而且，这个国家正在面临。
This disease is one of the most common infectious diseases , and a serious problem.
这种病是最常见的传染病之一，这是个严峻的问题。
And so this is a very serious problem.
所以这是个很严重的问题。
This disease is a serious problem.
这种疾病是个很严重的问题。
In addition to this serious limitation, there is a more vexing comparative problem.
除了这一严重的局限性，但还存在一个更加复杂的比较性问题。
In addition to this serious limitation, there is a more vexing comparative problem.
除了这一严重的局限性，但还存在一个更加复杂的比较性问题。
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