求翻译：There are several reasons why nurses need to have an understanding of psychological theories. Firstly, to understand fully the needs of potentially vulnerable groups in society, such as, the sick, elderly, children, those with learning difficulties, socially and economically disadvantaged to name but a few of these groups. Secondly, the nurse should be aware of the impact of long-term chronic illness. Patients with chronic illnesses such as cardiovascular diseases, cancer and respiratory disorders are people who are likely to require long-term care and treatment which may influence their ability to function as normal.是什么意思？

待解决 悬赏分：1 - 离问题结束还有