相关单词近义词 assiduous 勤勉的, diligent 勤奋的, industrious 勤劳的临近词hard, hard pan相似词hard-on, hard-pressed, hard-wearing, hard-won, hard/hot/close on sb's heels idiom, hard/tough as nails idiom, hard/tough cheese! idiom, hardback, 返回 hard-working