She has been staying up at nights busting a gut over the work she has to do.
She has been staying up at nights busting a gut over the work she has to do.
她连续几晚熬夜，竭尽全力完成她应做的工作。
She has been staying up at nights busting a gut over the work she has to do.
她连续几晚熬夜，竭尽全力完成她应做的工作。