There have now been well authenticated reports that the use of this drug is very occasionally responsible for heart attacks.现在已有非常可靠的报告证明该药物偶可引发心脏病。The date of manufacture of the jewellery has not been authenticated.这些珠宝...
An observant doctor can often detect depression from expression, posture, and movement.善于观察的医生常常能从人的表情、姿势以及动作诊察出抑郁症。You should be observant of the traffic rules.你应该遵守交通规则.Observant husbandmen usually hate some of the adv...