例句與造句

1. Ok i can all ready see people looking at the title and thinking OMG not again but bare with me . . . I would like to ask if we are looking for ET with boddies like http : / / en . wikipedia . org / wiki / SETI How do they think they will detect alien life ? i understand the idea of looking for radio signals ECT . . . is there any thought on say how a non-carbon based life form may comunicate ? what type of gas in the atmosphere would they give off meaning type of vegatation on a non carbon based world say if it was made of siliconm a common thought that i have heard of; what type of gas would it give off if burned do we look for the tell tail signs of these during the search or do we just look for the humanoid version of an Alien ?  Preceding talk ) 09 : 03, 30 April 2009 ( UTC)
2. It's difficult to find tail sign in a sentence. 用tail sign造句挺難的