tall order
US /tɔl ˈɔr.dər/
UK /tɔl ˈɔr.dər/
1.
艰巨的任务, 苛刻的要求
a request or task that is difficult to fulfill or achieve
:
•
Finishing this project by tomorrow is a tall order.
明天之前完成这个项目是个艰巨的任务。
•
Asking him to change his mind now is a tall order.
现在让他改变主意是个艰巨的任务。