زحمت کشیدنتلاش زیاد کردنسخت تلاش کردنto work very hard/ put great effort into achieving somethingخیلی سخت کار کردن، تلاش خیلی زیاد برای رسیدن به چیزی کردنHe has been breaking his back to get the project finished on time"as soon as we finished I'd break my back to get home to her"+ عکس و لینک
