橡皮: rubber, an eraser...
须知: key information, instructions, it must be borne in mind...
规模: scale, scope, extent...
通信: to correspond (by letter etc), to communicate, communication...
本来: original, originally, at first, it goes without saying, of course...
签名: to sign (one's name with a pen etc), to autograph, signature...
深厚: deep, profound...
香水: perfume, cologne...
官方: government, official (approved or issued by an authority)...
嘉宾: esteemed guest, honored guest, guest (on a show)...
