At first the parade goes swimmingly, until the crowd realises the balloon will not fit under a traffic light and handlers desperately attempt to move the reindeer around the obstruction.
起初游行走得很顺畅，直到人群发现气球被一个红绿灯卡住，操作手们拼命想让驯鹿越过障碍物。
2
Endoscopic balloon dilatation for treatment of benign gastric outlet obstruction is an effective and safe method.
经内镜球囊扩张是治疗良性胃输出端梗阻的安全而有效的方法。
3
To evaluate the efficacy and safety of endoscopic balloon dilatation for treatment of benign gastric outlet obstruction.