to improve one’s skill or knowledge
किसी के कौशल या ज्ञान को सुधारना (jo pehle aapne seekha tha use sudhaarne ke liye apne gyaan ya kaushal ko behatar banana)
"She decided to brush up on her painting techniques."
"उसने अपनी चित्रकला तकनीकों में सुधार करने का निर्णय लिया।" (Mujhe badi baithak se pehle apni prastuti kaushal ko **brush up on** karna hoga.)
To create emotional barriers or distance from others.
to face great difficulties with courage
to drive very fast
working late into the night
to help someone recover from illness
to have many responsibilities or tasks