mail n. 鎖子甲;鎧甲;(動(dòng)物的)鎖子狀甲殼。 vt. 使穿鎖子甲。 n. 1.郵政;郵袋;〔the mail〕〔美國(guó)〕(一批)郵件,郵件的一次發(fā)送[收集]〔英國(guó)限指寄到國(guó)外的郵件,一般郵件用 the post〕。 2.郵件運(yùn)輸工具〔郵船、郵車等〕。 3.郵務(wù)員,郵遞員。 4.〔pl.〕〔美國(guó)〕郵遞;郵政(制度)。 5.〔古語(yǔ)〕袋,旅行包,行囊。 an ordinary [a surface] mail平信;陸上(或海上)郵遞。 the Indian mail〔英國(guó)〕寄往印度的郵件。 air mail航空(郵件)。 Is there any mail for me? 〔美國(guó)〕我有信嗎? by mail 〔美國(guó)〕郵(寄) (=〔英國(guó)〕 by post)。 vt. 〔美國(guó)〕把(郵件)投入郵箱;郵寄。 mail a letter 寄信。
Surface mail, also known as sea mail, is mail that is transported by land and sea (along the surface of the earth), rather than by air, as in airmail. Surface mail is significantly cheaper and slower than airmail, and thus is preferred for large or heavy, non-urgent items ? it is primarily used for packages, not letters.