am·bas·sa·dor /æmˈbæsədɚ/
  大使
  Am·bas·sa·dor Em·bas·sa·dor, n.
  1. A minister of the highest rank sent to a foreign court to represent there his sovereign or country.
  Note: ☞ Ambassadors are either ordinary [or resident] or extraordinary, that is, sent upon some special or unusual occasion or errand.
  2. An official messenger and representative.
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  ambassador
       n 1: a diplomat of the highest rank; accredited as representative
            from one country to another [syn: embassador]
       2: an informal representative; "an ambassador of good will"
  Ambassador
     In the Old Testament the Hebrew word _tsir_, meaning "one who
     goes on an errand," is rendered thus (Josh. 9:4; Prov. 13:17;
     Isa. 18:2; Jer. 49:14; Obad. 1:1). This is also the rendering of
     _melits_, meaning "an interpreter," in 2 Chr. 32:31; and of
     _malak_, a "messenger," in 2 Chr. 35:21; Isa. 30:4; 33:7; Ezek.
     17:15. This is the name used by the apostle as designating those
     who are appointed by God to declare his will (2 Cor. 5:20; Eph.
     6:20).
       The Hebrews on various occasions and for various purposes had
     recourse to the services of ambassadors, e.g., to contract
     alliances (Josh. 9:4), to solicit favours (Num. 20:14), to
     remonstrate when wrong was done (Judg. 11:12), to condole with a
     young king on the death of his father (2 Sam. 10:2), and to
     congratulate a king on his accession to the throne (1 Kings
     5:1).
       To do injury to an ambassador was to insult the king who sent
     him (2 Sam. 10:5).