the fundamental assumptions from which something is begun or developed or calculated or explained;
"the whole argument rested on a basis of conjecture"
lowest support of a structure;
"it was built on a base of solid rock"
"he stood at the foot of the tower"
preliminary preparation as a basis or foundation;
"we are prepared today because of groundwork that was done ten years ago"
- They had laid the groundwork for future development.
- He laid the groundwork for a good command of French at high school.
- Constant practice is the groundwork for success in play the piano.
A case of laying the groundwork for the real negotiations.出自： K. Ishiguro