to waste time creating something that already exists
浪费时间创造已经存在的东西 (làngfèi shíjiān chuàngzào yǐjīng cúnzài de dōngxī)
"Don’t reinvent the wheel; use the existing design."
"不要重新发明轮子; 使用现有设计。" (Bùyào **zhòngxīn fāmíng lúnzi**; shǐyòng xiàn yǒu shèjì.)
in the testing phase before final release
a small action that leads to progress towards a goal
to have many responsibilities or tasks
to accuse someone of being responsible for something bad.
to spend money carelessly or extravagantly
receiving public attention