thou啥意思?

Art thou online?意思 thou什么意思 thou Thou shalt not kill的意思 thou shalt not sin against equality什么意思 t1.take （letters parcels etc）to the place是哪个单词的意思 2.one thou For thou must die Thou art that wherefore art thou wherefor art thou thou art alive.thou art still living怎么解释? "dust thou art,to dust returnest"中的"thou"是什么意思