ISFCn.国际心脏病联合会
isv.是(be的第三人称单数一般现在时)
Is hell exothermic or endothermic?
Is bottled water hurting aquifers?
Is enabled for full-text querying.启用了全文查询。
Is not the disproportion enormous?
Is there an arbitrage opportunity?
Is skilled labor easily available?
Is Harry Potter causing headaches?
Is tender-opening done publicly?
Ischemic postpartum pituitary necrosis局部缺血性产后垂体坏死