mmHg

例句：

1. 1.The doctor measured the patient's blood pressure at 120/80 mmHg.
   医生为病人测量了血压，收缩压为120/80毫米汞柱。
2. 2. The mercury levels in the water were too high for human consumption.
   水中的汞含量对人类来说太高了。
3. 3. The patient's blood pressure was checked every hour during the operation.
   手术期间，患者每半小时都要检查一次血压。