[] a measurement of how well the Paris stock exchange is performing, calculated using the share prices of the 40 largest companies on the stock exchangeCAC 40 股票指数（使用巴黎证券交易所 40 家最大公司的股票价格计算，以衡量巴黎证券交易所的运营状况）◆In Paris, the CAC 40 closed up 1.5 per cent.在巴黎，CAC40 股票指数收市上扬了 1.5%。➡index