The caution comes as more experts argue that the search for intelligent life should be stepped up.

对外星智慧生命的搜索是否应该加强？ 随着这种学术研讨的不断激烈化，警告也随之而来。

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The overseas oil and gas development will first face the feasibility of the concrete project. The basic study should be stepped up from the strategic viewpoint.

海外油气的开拓中首先面对的是具体项目的可行性，但从战略上看也必须加强基础性研究。

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The Department of Health said it had "stepped up" surveillance arrangements and was "actively considering our response in the UK should further action be required".

健康部表示已经加快监管安排,并考虑民众呼声采取进一步的需要的行动.

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Russian Prime Minister Vladimir Putin said earlier in the day liquefied natural gas supplies to Japan should be stepped up if requested.

FORBES: Russia to Boost Energy Supplies to Japan After Quake-Ria Novosti

Now that Yangon is being admitted into the ranks, efforts should be stepped up to persuade it to be less heavy-handed, though results are far from certain.

CNN: RETOOLING ASEAN

Culture Secretary Maria Miller earlier stepped up criticism by saying retailers should not be "let off the hook" for putting wrongly labelled products on their shelves.

BBC: UK