Persons who do remain at home while in ill health have serious difficulties in getting social , medical and psychiatric services brought directly to them .
身体不好而仍留在家中的人要得到社会、医疗和精神病治疗方面回送上门的服务，存在着极其严重的困难。
I also deeply believe that by upholding the Buddha's teachings, I definitely can overcome various difficulties, and thus I remain confident about the future.
也深信秉着佛陀的教诲，一定可以克服种种困境，所以我对未来还是很有信心的。
I also deeply believe that by upholding the Buddha's teachings, I definitely can overcome various difficulties, and thus I remain confident about the future.
也深信秉著佛陀的教诲，一定可以克服种种困境，所以我对未来还是很有信心的。
Although great progress has been achieved recently in this field, many difficulties and problems still remain unresolved. Countermeasures and prospects were put forward in this article.
尽管近年来中西医结合防治冠心病研究取得了较大进展，但仍存在许多问题和难点，本文就此提出对策及展望。
Because of difficulties associated with the culture, cloning and propagation, the biological properties of these cells remain largely unknown.
因为这类细胞培养、克隆、增殖都比较困难，其生物学特点至今知之甚少。
Because of difficulties associated with the culture, cloning and propagation, the biological properties of these cells remain largely unknown.
因为这类细胞培养、克隆、增殖都比较困难，其生物学特点至今知之甚少。
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