ٻѩǡʹհٻѩ, ŵͼռȺ. ͵Ķǻṥ˵ĳļΧĲ. ʱ෨֮ͬ, ٻѩǡضΪĿ, ȴӰ鲼ͼϵг. ȺĿ, ʧЧ, ȺҲԶʧ.

ҪСٻѩǡ,  [ٻѩ] ͼʾϰ, Ȼ<link="topic:line of sight">Ұ</link>ڵκһط. , ȺںڰͿ籩ѩзӵ, ˵ĳ.
