He called for widespread changes to make the armed forces more democratic and less expensive.他呼吁进行广泛的改革，使武装部队作风更加民主，开支更加俭省。She spends most of her money on clothes, and scrimps on food.她把钱大部分花在衣着上，在吃的方面则十分俭省。We must practise the strictest frugality and economy.我们必须厉行俭省节约。