adj.同轴的,嵌入的,内嵌的;
例句:
Don't push in; wait in line like everyone else.
别挤进来, 要像大家一样挨个儿排队.
Place your right toe in line with your left heel.
把右脚趾与左脚跟排在一直线上.
She is now seventh in line of succession to the throne.
她目前是王位的第七顺位继承人。