You can use accurate to describe the results of someone's actions when they do or copy something correctly or exactly.
We require grammar and spelling to be accurate.
我们要求语法与拼写正确无误。
An accurate weapon or throw reaches the exact point or target that it was intended to reach. You can also describe a person as accurate if they fire a weapon or throw something in this way.
His throws were long, hard and accurate, as always.
像往常一样,他的投掷远、有力又精准。