He was taken ill, and little wonder, considering that he had been overworking for years.他病了，这并不奇怪，因为几年来他一直操劳过度。He wanted to make sure they didn't overwork and have heart attacks.他要确保他们不会操劳过度，引出心脏病来。Be careful not to overextend yourself. You've been very ill.注意不要让自己操劳过度，你已经重病在身了。