http://stargate.wikia.com/wiki/Tollan_(people)
With the cannons as their only defense, they met their eventual destruction,
which most likely could have been avoided had they taken the threat of the
Goa'uld more seriously - and developed alliances and technology accordingly.
小弟不太懂這一段翻譯 had they taken the threat... -and developed alliances.
串聯不起來

大砲是他們僅存的防禦他們遇到了最後的毀壞這個毀壞原本是可以避免的如果他們原本更加認真的看待來自goulod的威脅而發展盟友關係與科技