to be knowledgeable or skilled about something
किसी चीज के बारे में जानकार या कुशल होना (kisi cheez ke baare mein jaankaar ya kushal hona)
"You can tell she really knows her stuff about physics."
"तुम बता सकते हो कि उसे भौतिकी के बारे में अच्छा ज्ञान है।" (Tum bata sakte ho ki use bhoutiki ke baare mein accha gyaan hai.)
to fulfill promises and obligations
To push harder and make a greater effort.
to work hard and focus on something
to remain firm in your beliefs or decisions even under press...
to help someone through a difficult period
to spread kindness rapidly and uncontrollably