“生活标准”常见的英文表达是 standard of living 。
例句：
The standard of living in this city has improved significantly over the past decade.（过去十年里，这座城市的生活标准有了显著提高。）
A high standard of living is often associated with economic prosperity.（较高的生活标准通常与经济繁荣相关联。 ）