immersion：浸入[渍，润，没，液]，浸[落]水；专心，热中，陷入 

词根词缀：im-入,向内 + -mers-沉,浸 + -ion名词词尾

• phylum
• physic
• physical
• physical education
• physicality
• physically
• physician
• physicist
• physics
• physio-
• physiognomy
• physiological
• physiologist
• physiology
• physiotherapy
• physique
• pi
• pianissimo
• pianist
• piano
• pianoforte
• Pianola
• piazza
• pibroch
• pica