therefore等于三个词短语:as a resultAs a result, services have been drastically reduced.结果，服务被大大减少了。
He was too young and therefore he went to hospital accompanied by his parents.他还太小因此只能由父母陪同去就诊。He had a car accident and therefore could not go to school.他出了车祸，所以不能去上学。He killed a man and therefore deserved to be punished.他杀了人，由此理应受到惩罚。There's no atmosphere on the moon, therefore, there's no wind.月球上并没有大气层 因此不会有风
