Stamp的中文意思是邮票。说起邮票,棉花糖不禁想起了诗人余光中的一首诗《乡愁》:小时候,乡愁是一枚小小的邮票,我在这头,母亲在那头……内容英文如下: When I was young, My homesickness(乡愁)was a small stamp, I was here, My mother was there. 在通讯技术发达的今天,爷爷奶奶辈的“乡愁”,从一枚邮票变成了
Air samples were collected simultaneously at platform,mezzanine and outdoor in five typical stations of subway system in Shanghai,China using stainless steel ca