concentrate on/upon…集中注意力于…
on the contrary与之相反
convince somebody of something使某人确信某事
deprive somebody of something剥夺某人某物
derive from…起源于…
in detail详细地
be equipped with…装备有…
in essence 本质上
to…extent在…程度上
inform. somebody of something通知某人某事
lie in在于… major in主修…
in the light of… 按照…,根据…