道路堵塞了，所以我们只好由田间绕道而来。
The road was blocked so we had to come round by the fields .
大路正在修，不能通行，我们只得绕道而来，所以迟到了半小时。
The roads being closed for repairs, we had to come round, and so arrived half an hour late.
大路正在修，不能通行，我们只得绕道而来，所以迟到了半小时。
The roads being closed for repairs, we had to come round, and so arrived half an hour late.
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