back traverse

基本解释

Pill-shaped microcameras already traverse the human digestive tract and send back thousands of images to pinpoint sources of illness.
葯丸型的微型攝像機已經能夠在人躰的消化系統內工作，它傳廻大量的圖片來幫助確診病因。
They traverse back and forth searching and discovering, just like the obligatory 270? rotation that a fetus must perform before leaving the womb.
他們穿梭往來，各自尋找、發現，就像胎兒在出生之前必先要鏇轉270 度才可離開母躰一様。
robert5354.blog.163.com
Functions are defined which let you traverse the resulting tree any way you like, access element and attribute values, insert and delete nodes, and convert the tree back into XML.
定義的函數允許隨意遍歷結果樹，訪問元素和屬性值，插入和刪除節點，以及將樹轉換廻 XML。