What does it say? 它在说什么?

I returned from Russia after living there nearly two years. My sister decided to surprise me by creating “welcome home” signs in Russian. She went to a website that offered translations, and printed the translated phrase onto cardboards. When I got off the plane, I saw my whole family, excitedly waving colored cardboards. My sister gave me a big hug, and pointed proudly to her creations. “Isn't that great?” she said, “Bet you didn't think I knew any Russian.” I admitted that I was indeed surprised—the signs actually said: “Translation not found.”

我在俄国住了将近两年以后回国。我妹妹打算给我一个惊喜，用俄文做一个“欢迎归来”的标语。她到一个提供翻译的网站，并且把翻译出来的文字打印在硬纸板上。我一下飞机就看到我们全家人兴高采烈地挥舞着彩色的硬纸板。我妹妹给了我一个热烈的拥抱，并且自豪地指着她的作品说：“是不是很棒?我敢打赌你一定没想到我懂俄语。”我承认我确实是大吃一惊。这标语实际上是说：“译文没有找到。”