rush sb.off one’s feet

rush sb.off one’s feet 使某人忙得不可开交

【例句】

◆ He said his new job had rushed him off his feet.他说他的新工作使他忙得不可开交。 

◆ You'd better not ask for help when everone is rushed off their feet.你最好不要在大家忙得不可开交的时候请求帮助。