blood and air exchange and carrying oxygen by a pipeline, the liquid output end of the artificial lung is communicated with an arterial vessel of a severed limb or a severed finger by a pipeline, and the severed limb or the severed finger is placed into an airtight constant-temperature ...
网络过去完成时 网络释义 1. 过去完成时 由于“发现”用的是一般过去时(found),所有夜间“闯进”办公室,就应用过去完成时(had broken)。又如: www.yygrammar.com|基于3个网页 例句 更多例句筛选