1.because of 因为
例句:Investment remains tiny primarily because of the exorbitant cost of land.
投资仍然微乎其微,主要原因在于土地成本过高
。2.suffer from 患(某种病)
例句:You must have suffered from a cold.
你一定是感冒了
。3.mental illness 精神疾病
例句:Modern medicine has a large armoury of drugs for the treatment of mental illness.
现代医学有大量可以用来治疗精神疾病的药物
。4.slow down 减缓
例句:There is no cure for the disease, although drugs can slow down its rate of development.
尽管药物可以减缓病情的发展,但是这种病仍然是不治之症
。