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(gè)電子郵件橫行的年代，但正式的商務(wù)場(chǎng)合還是請(qǐng)用信封。
圖二：使用開(kāi)窗式信封來(lái)顯示收信人的地址和姓名是重復(fù)打印的悲劇的開(kāi)始。
圖三：魏武經(jīng)常用最結(jié)實(shí)的封箱膠帶封信封口，我想收信者沒(méi)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(huì)把自己封上，不要敞著就寄出去了。
圖五：小李總是要前臺(tái)多備一些“三角護(hù)翼”的信封，聽(tīng)的那個(gè)小丫頭總是面紅耳赤的，還是說(shuō)“三角形封口”好點(diǎn)。
圖六：小常識(shí)：一般公認(rèn)棕色信封是給發(fā)廣告信用的，而白色信封是私人或商務(wù)使用。