when something is difficult to learn, usually quickly
何かが学ぶのが難しい、通常は速い (nanika ga manabu no ga muzukashii, tsuujou wa hayai)
"The new software had a steep learning curve, but I managed to understand it."
"新しいソフトウェアは急な学習曲線がありましたが、私はそれを理解することができました。" (Atarashii sofuto wea wa **kyuu na gakushuu kyokusen** ga arimashita ga, watashi wa sore o rikai suru koto ga dekimashita.)
Receiving public attention or scrutiny.
to put pressure on someone to make them behave or act a cert...
A strong connection of trust and affection between friends.
to reduce a list of options to a smaller number
Because of a desire to know or learn something.
As long as you are alive, there is a chance for improvement.