其实如果用英语解释区别就很明确了:pressure:the action of putting force or weight onto sth. eg:The pressure of the water turns this wheel,and this is used to make electric power. stress:(a state of wory resulting from)pressure caused by the problems of living,too much work,etc. eg:He's under a lot of stress because his wife is very ill.strain:the condition of being tightly pulled or streched eg:The rope broke under the strain.burden:sth. that is carried;a load eg:a heavy burden