tedious是指某项工作很繁杂沉重所以令人乏味
dull指某人无聊单调令人乏味
举例:
Filing is such a tedious job.
编档真是项乏味/无聊的工作.
He's a very dull person.All he knows is studying.
他是个无聊的人.他只知道学习.