Immigration is a controversial issue in many countries.

移民在很多国家都是一个有争议的问题。

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People rarely reach an absolute consensus on such a controversial issue.

在这样具有争议性的问题上人们很少达成绝对的共识。

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So what to eat, what the optimal diet is has become a pretty controversial issue.

吃什么和如何确定最佳食谱,成为冲突的两个问题

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

But in Peru, Mr Alcazar admits, such concessions have now become a controversial issue.

ECONOMIST: The politics of privatisation

It is a controversial issue, as many governments and Eurosceptic politicians are wary of moves towards "EU taxes".

BBC: Euro MPs adopt amended EU budget for 2011

The new ranking takes a unique look at a controversial issue: whether having external, visible influence and thought leadership is a necessity for CMO success.

FORBES: Apple's Philip Schiller Tops List As Most Influential CMO