翻译下列句子, 注意斜体部分。 1.The young couple were leading a cat-and-dog life. 2.He started to repair his car himself, but realized that he had bitten off more than he could chew. 3.Kissinger felt that the massive bombing would strengthen the president's hand in China. 4.After seven straight victories, the team met with its Waterloo. 5.He is a frugal man; the furnishings of his home are truly Spartan.