adv.主要地

The book is aimed principally at beginners. 這本書主要是為初學(xué)者編寫的。

The dialect is spoken principally in the rural areas. 這種方言主要在農(nóng)村地區(qū)使用。

The money is invested principally in government stock. 這筆錢主要投資于政府公債上。

Laughing is the sensation of feeling good all over, and shows it principally in one spot. 笑，是全身舒暢的感覺，而卻主要表現(xiàn)于一個部分。