English up to date:“Fit for Purpose”

Fit for Purpose
origin meaning:began life in the field of consumer protection law. a manufactured product that does what its designed to do.if not,you can get a refund/replacement.
2006:John Reed// no good at doing its job.
something that is fit for purpose is good enough to do the job it was designed to do
"is my english fit for purpose？？"
适合目标的，与目的相符的