他们乘坐了从伦敦到爱丁堡的直达火车。

They took the ___through train from London to Edinburgh.

你应该查看前往伯明翰的直达火车的时刻表。

You should check the schedule for ___through trains to Birmingham.

前往巴黎的直达火车非常方便，因为你不需换乘。

The ___through train to Paris is very convenient because you don't need to change.