qǐ yè / xū yào / dìng qī / cè shì / xì tǒng / de / yì sǔn xìng / jí shí / xiū bǔ / ān quán / lòu dòng企业需要定期测试系统的易损性,及时修补安全漏洞。Companies need to regularly test their systems' vulnerability and promptly fix security flaws.