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 enter a new field or profession successfully
to make connections between ideas or information
to not express your emotions or worries
to campaign for a political position
a positive aspect in a bad situation
to prepare for all possible outcomes; to be cautious