咳咳...A=Alice B=BobB:Hello,Alice!A:Hi.Bob!B:Oh,what's this in English?A:Pencil-case.B:How do you spell it?A:P-E-N-C-I-L-C-A-S-E.B:Oh,what color is it?A:It's blue.B:Uh...what's that in English?A:Ruler...