And the more positive a doctor is when telling a patient about the placebo he is prescribing, the more likely it is to do that patient good.
并且在向患者描述疗效的时候，医生显得越积极，对于患者来说安慰治疗的疗效越好。
If the test is positive, a course of antibiotics may be prescribed.
如果化验结果呈阳性，可能要开一个疗程的抗生素。
It can be positive (a beekeepers' bees pollinating neighboring crops) or negative (pollution from a power station).
外部性可能是有益的(养蜂人的蜜蜂为邻居的庄稼授粉)，也可能是有害的(如来自发电厂的污染)。
RESULTS: of the 40 cases of chronic dacryocystitis patients with lacrimal secretion culture, 39 cases were positive, a total of 50 strains positive bacteria were isolated.
结果：40例慢性泪囊炎患者泪囊分泌物培养，39例为阳性，共分离出50株阳性菌。
RESULTS: of the 40 cases of chronic dacryocystitis patients with lacrimal secretion culture, 39 cases were positive, a total of 50 strains positive bacteria were isolated.
结果：40例慢性泪囊炎患者泪囊分泌物培养，39例为阳性，共分离出50株阳性菌。
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