トップ新着トレンドコメント過去質問紹介求人

eepp

no profile record

コメント

·4 年前·議論

Damn this made me read a lot about this specific derailment, but also about Puget Sound, Salish Sea, Positive train control and all this 220-MHz stuff.

Thanks!

·5 年前·議論

thank you