held only once every 10 years 的中文意思是什么?held only once every 10 years——the World Philatelic Exhibition opened earlier this month in Washing D.C.的中文意思是什么?
问题描述：
held only once every 10 years 的中文意思是什么?
held only once every 10 years——the World Philatelic Exhibition opened earlier this month in Washing D.C.的中文意思是什么?
答
每十年一届的世界集邮博览会于本月早时在华盛顿特区开幕。
答
十年只举行一次——世界邮票展览月初在华盛顿举行。
答
十年一届的世界集邮展览于本月初在华盛顿开幕.
World Philatelic Exhibition：世界集邮展览