when something is difficult to learn, usually quickly
当某事很难学习，通常是迅速的 (dang mou shi hen nan xuexi, tongchang shi xunsu de)
"The new software had a steep learning curve, but I managed to understand it."
"新软件有一个陡峭的学习曲线，但我设法理解了它。" (xin ruanjian you yige **douqiao de xuexi quxian**, dan wo shefa lijie le ta.)
a person with strong purpose and determination to achieve so...
to punish or criticize someone severely
to make others happy with your positivity
to keep feelings inside and not express them
to prepare energetically for something
to study intensely
