tighten their purse strings造句

• Tommy tam hok lam, vice president of aia-uk, was delighted to work jointly with hantec group on this survey . he pointed out that, the survey results also implied weak consumer spending . the investment public will naturally tighten their purse strings as they lost money in their investments
  值得留意的是，对明年外汇市场感兴趣的人数有所增加，有1,165人次愿意就明年外汇投资表态，比填今年成绩的人数多172人，而看好明年汇市的就比看淡的人多。