arrive at
1．reach a place，usually small到达（一般比较小的地方）
They arrived at the air port just before the plane took off．飞机临起飞前，他们才赶到了机场。
2．reach sth． such as a decision or conclusion达成、作出（决定、结论等）
After many hours'discussion， the committee arrived at the decision．经过许多小时的讨论，委员会作出了决定。
I wish they would arrive at some conclusion．我希望他们能得出某种结论。
as a matter of course naturally当然
He is，as a matter of course，on my side．他当然站在我这边了。