stress与pressure不可数。
stressn.精神压力；心理负担；紧张；
pressuren.压力；挤压；压强；大气压
Water supplies to the house are at low pressure.
这房子的供水水压低。
I need to have my blood pressure taken.
我需要量一下血压。
Stress at work is a matter of concern to staff and management.
工作压力是一件让员工和管理人员都关切的事。
