| to work hard
diligent in one's work
all through the night |
| to take actions that suit local circumstances |
| to have convenient communications
to extend in all directions |
| to have great skills or power |
| extensive knowledge |
| benighted
ignorant
to be stubborn and conservative |
| to besiege thoroughly
very crowded |
| to digest and apprehend |
| to understand thoroughly |
| to understand thoroughly |