to work extremely hard
非常努力地工作 (fēicháng nǔlì de gōngzuò)
"She worked her fingers to the bone to support her family."
"她非常努力工作，支持她的家庭。" (Tā fēicháng nǔlì gōngzuò, zhīchí tā de jiātíng.)
to reintroduce something gradually
to end a situation where no progress is being made
to control something or someone secretly
thinking or acting in an unusual or unconventional way
To know something very well
to start something from the very beginning
