gut

n. 勇气,肠,剧情

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。

After what he said to my wife, I was surprised that he had the guts to come round and apologize.

他对我妻子说了那些话以后，竟有勇气前来致歉，这使我很吃惊。