(noun.) employment for performers or performing groups that lasts for a limited period of time; 'the play had bookings throughout the summer'.
(noun.) the act of sharing in the activities of a group; 'the teacher tried to increase his students' engagement in class activities'.
(noun.) contact by fitting together; 'the engagement of the clutch'; 'the meshing of gears'.
加勒特录入
整理:纳特