cross the line：衝刺；穿過那條線， 過線，做得太過分了。
She definitely cross the line.
她的確過分了一點。
We shouldn't cross the line and
do bad things.
我們不應該越界做壞事。
Who do you think you are? Don't
cross the line.
你以為你是誰啊？別太過分了！
I would never cross the line like
that.
我從來不會幹那麼出格的事。
As long as we didn't cross the line.只要我們不違規就行。