留: stay...
膜: membrane, film...
礼堂: assembly hall, auditorium...
安宁: peaceful, tranquil, calm, composed, free from worry...
户: a household, door, family...
中年: middle age...
舰艇: warship, naval vessel...
处在: to be situated at, to find oneself at...
洋溢: brimming with, steeped in...
里边: inside...