“一直”是个多义词，它可以指一直（汉语词语）, 一直（王筝歌曲）。
成一直线 in line ; in alignment ; straighten out
雪一直下 snow falling down
一直走 go straight ; walk straight on ; Keep Going ; Keep Walking
我一直在流血 I keep bleeding
一直地 all the while ; invariably
此后一直 ever since ; ever since phr
一直牵着手 Going on holding hands
她一直收集邮票 She has been collecting stamps
一直以为 Always thought ; I always thought that
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