Tam sim no peb muaj cov khoom siv zoo tshaj. Peb cov kev daws teeb meem tau raug xa tawm rau koj USA, UK thiab li ntawd, txaus siab rau lub npe superb Peb tsuas yog tsis muab qhov zoo rau peb cov neeg siv khoom, tab sis ntau txawm tias tseem ceeb yog peb cov kev pabcuam zoo tshaj plaws thiab tus nqi sib tw. Cov khoom yuav muab rau thoob plaws ntiaj teb, xws li nyob Tebchaws Europe, koj tuaj yeem nrhiav kev pabcuam engineation Peb tuaj yeem muab cov txiaj ntsig zoo nrog cov nqi sib tw rau koj.