lain
/leɪn/Lain is the past participle of lie. (lie)的过去分词
verb [vi. 不及物动词] 躺,位于(lie的过去分词)
How long has he lain there like that? 他像那样躺在那儿有多久了?
How long has he lain there like that? 他像那样躺在那儿有多久了?