A recent survey by the Crown Plaza hotel group suggests that certain times and activities are more conducive to creative thinking than others [PDF download].
最近由皇冠饭店组织的一项调查表明：特定的时间、特定的活动更有益于创造性思维。
2
Group C installed only healing abutment as a transition, and made permanent crown restoration 3 months later.
C组术后只安装愈合基台过渡，3个月后进行永久冠修复。
3
Basilosaurids are the extinct sister group to the crown cetaceans.