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He has been studying archeology these thirty years.是什么意思？

He has been studying archeology these thirty years.

他这三十年来一直在研究考古学.

相关词汇
he has been studying archeology these thirty years

he

pron. 他，它，一个人；n. 雄性动物；

has

v. 有( have的第三人称单数 )，（亲属关系中）接受，拿，买到；

been

v. 用来表示某人或某物即主语本身，用来表示某人或某物属于某一群体或有某种性质（ be的过去分词 ），在，存在，不受干扰，去过了，be的过去分词；

studying

v. 学习，研究( study的现在分词 )，想出，详细地检查，背诵（台词等）；

archeology

n. 考古学， 古物学，文化遗物， 古迹；

these

adj. 这些的；pron. 这些；

thirty

n. 三十，三十个，三十年代，三十的记号；adj. 三十的，三十个的；num. 三十，三十个；

years

n. 年( year的名词复数 )，年纪，一年的期间，某年级的学生；
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