第1个回答 2011-11-27
Focus (your atention) on the experiment.
第2个回答 2011-11-27
be focused on the experiment.
Concentrate yourself on the experiment.
Focus your atention on the experiment
pay attention to the experiment
第3个回答 2011-11-28
Focusing on the experiment.
第4个回答 2011-11-27
Concentrate on the experiment!
祈使句本回答被提问者采纳
第5个回答 2011-11-27
focus on experiment