1·During the Maastrichtian, a regression commences.
在马斯特里赫特时期，回归开始了。
2·The gas within galaxies, however, does collide, and an avalanche of star formation commences.
不过，星系中的气体却会碰撞，于是恒星形成的“雪崩”过程开始了。
3·Big blades emerge and the carving commences.
人们拿出了大刀片，之后切肉开始了。
4·If the corporation commences an inquiry into the allegations made in the demand or complaint, the court may stay any derivative proceeding for such period as the court deems appropriate.
如果公司开始调查权利请求书或控诉书中的主张，法院可以在其认为是适当的期间中止任何派生的诉讼。
5·Most problems concerning Human resources commences when recruitment is not handled properly.
人力资源的大部分问题都是由于招聘开始时的处理不当。