Fig1.Emails prevail now, but do use envelopes in formal occasions instead.
Fig2.Open-window envelopes, showing receivers' names&addresses, may inaugurate repeated printout.
Fig3.A big chopper is needed to open Weiwu's snail mails for they are sealed with strong parcel tape.
Fig4.Self-seal means adhesive tapes attached, so not the mails but you should accomplish the sealing job instead of open-wide delivery.
Fig5. Xiaoli always blushed the receptionist while asking for more“gussets”envelopes stocked. Just call them“triangle seals”, ok?
Fig6. A tip: As a general rule. Brown for public purposes and white for private or biz ones.
圖一：這是一個電子郵件橫行的年代，但正式的商務場合還是請用信封。
圖二：使用開窗式信封來顯示收信人的地址和姓名是重復打印的悲劇的開始。
圖三：魏武經(jīng)常用最結(jié)實的封箱膠帶封信封口，我想收信者沒有一把好刀是肯定看不到信的內(nèi)容的。
圖四：自封信封意思是信封口上面帶著雙面膠，不是信封自己會把自己封上，不要敞著就寄出去了。
圖五：小李總是要前臺多備一些“三角護翼”的信封，聽的那個小丫頭總是面紅耳赤的，還是說“三角形封口”好點。
圖六：小常識：一般公認棕色信封是給發(fā)廣告信用的，而白色信封是私人或商務使用。