There's no medical proof of an aneurysm, but what if she has an aneurysm anyway?
很正常。 这里没有一个血管瘤的医学化验。 但是如果她有血管瘤， 怎么办?。
The reluctance towards veganism has been less about the medical proof of its effectiveness, and more about social perceptions.
人们不情愿转向纯素食，不单是缺乏对素食效果医学证明的了解，更多地是由于社会观念。
Absenteeism rates average 18%, but little can be done about abuses : public workers can take three days off sick without medical proof .
平均旷工率达到了18%，对于这种权力的滥用无计可施，这由于公务员在没有医生证明的情况下也可因病请假三天。
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