窗口期的英文:window period (the period between the onset of HIV infection and the appearance of detectable antibodies to the virus)window是什么意思:n. 窗,窗户,窗口;橱窗;空当;视窗The window has a caption http://www.24en.com/p/260983.html
英语作文:一切刚开始:本文由作文地带整理分享,希望各位网友喜欢。
"We are reading the first verse of the first chapter of a book whose pages are infinite…”
“我们正在读一本书的第一章第一行,这本书的页数是... http://www.joozone.com/gaokao/803478.html