most important of all apart from their hometown and parents students couldnt catch sight of any familiar face and have to suffer from homelessness which can cause certain serious mental disease
更重要的是，离开了家乡和父母，看不到任何熟悉的面孔，他们不得不忍受思家之苦，这可能会导致严重的精神疾病
以上为机器翻译结果，长、整句建议使用 人工翻译 。