老人常常在失去亲人后展现出情感上的脆弱。

Elderly people often show their ___vulnerabilities after losing loved ones.

定期更新软件可以修复已知的系统漏洞。

Regular software updates can fix known system ___vulnerabilities.

老年人由于免疫系统较弱，更容易受到疾病的侵害。

Older adults have greater ___vulnerabilities to diseases due to weaker immune systems.