科学家通用核磁共振进行脑部扫描，发现了两种刺激类型存在差异，因为它们分别令大脑的不同区域活跃。
Scientists have used MRI brain scans to determine that these two types of stimulation differ because they actually activate different parts of the brain.
具有悠久吸烟传统的爱尔兰和意大利分别在2004年和2005年相当顺利地推出了禁烟令。
Ireland and Italy show that countries with longstanding smoking traditions may introduce bans fairly smoothly, as they did in 2004 and 2005.
只是修女不让他和你们见面，因为怕你们分别的场景令大家都很难受。
But the nuns wouldn't let him be in the room with you, because they said it would be too hard when he had to leave.
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