surface mail是什么意思

双语用例

• The ' laboratory reporting in most state health departments is still surface mail, with a measured 10-14 day time lag in some states ' (page 23).

• These concessions allow air mail letters weighing up to one ounce, and surface mail letters up to two ounces, to be sent home free.

• Parcels sent by surface mail should normally arrive in about three weeks, and, although they cannot be registered, they may be insured.

• Most of the surface mail affected is now moving again although there is still a backlog.

• Surface mail necessarily takes considerably longer and five weeks is about the minimum time.

• The time taken for magazines and parcels sent by surface mail is normally 55 to 60 days.

• The average time for surface mail has been reduced from 54 to 43 days.

• The consultation pack was accompanied by a consultation feedback questionnaire which could be returned both via surface mail or completed on-line.