他漠然而漫无目标地注视着不远处。He stares detachedly into the middle distance, towards nothing in particular.他带着贵族式的漠然对其一笑置之。He laughed it off with aristocratic indifference.编程者似乎对大批量制造含暴力因素的产品处之漠然，毫无责任心。Programme-makers seem irresponsi...
心脏有瓣膜控制血液流进流出.The heart has valves to let blood flow in and out of it.二尖瓣狭窄的病变是在心肌而不是在瓣膜.The abnormality mitral stenosis was in myocardium, not in the valve.他们是那些最不适于作瓣膜切开术的患者.They are patients in whom the valvulotomy wa...