0 to make something into small pieces or a powder by pressing between hard surfaces -- 碾碎，磨碎，把…磨成粉
1 to rub something against a hard surface, in order to make it sharper or smoother -- 磨，把…磨鋒利，把…磨光
2 a difficult or boring activity that needs a lot of effort -- 令人厭倦的苦事，苦差事
3 a boring person who studies all the time and does nothing else -- 只會讀書的無趣之人，書呆子
The perforated disks were created by reworking a potsherd into a circular form by chipping, drilling, and then grinding the edges to a smooth finish.
Samples from the normal smooth surface of the gneiss boulder show that the surface has been ground and polished during glacial transportation.
The soil was gently ground, passed through a 2-mm sieve and completely mixed prior to being placed in pots.
A p-rule is ground exactly when every atom in it is ground.
Time to stop the little saltmill grinding, before everything else has become bitter.
In cases of the latter sort, the values that ground our attitudes are not truly our own.
The tissue was dried by grinding with anhydrous sodium sulfate and extracted with several volumes of hexane to remove carotenoids, retinols, and retinyl esters.
Where the standards were unclear, gover nment officials faced the dilemma of how to ground the political justification for authoritative direction of private voluntary relationships.
