n the process whereby a person concentrates on some features of the environment to the (relative) exclusion of others
n the act of being present (at a meeting or event etc.)
v be present at (meetings, church services, university), etc.
v take charge of or deal with
v to accompany as a circumstance or follow as a result
v work for or be a servant to
v give heed (to)
a. 主治的