obstruction at ureteropelvic junction

例句：

1. 1. The patient's heart rate increasedsignificantly during the procedure.
   在手术过程中，患者的心率显著增加。
2. 2. The road was blockeddue to an accident.
   由于事故，道路被封锁了。
3. 3. The construction of a newbridge will obstruct the flow of traffic.
   建造一座新桥将阻碍交通流动。