Acrobat, busker . Their feet to the sky, their heads to the floor.耍杂的, 卖艺的, 脚踩天, 头顶地.NICK EDWARDS : The pair even keep the odd serenading busker amused.尼克爱德华兹: 这两只绵羊让人思索想着美好的回忆.The oldest performer is 89 year - old'...
这个肺血栓栓子使肺动脉主干闭塞.This pulmonary thromboembolism is occluding the main pulmonary artery.鞍状栓子是猝死原因.Such a saddle embolus is a cause for sudden death.根据肺动脉内栓子形态分4类.The emboli are divided into 4 kinds according to the shapes....