be filled with vigour;be imbued with vitality; bubble (over) with life;dynamic; full of pep (/life); fresh and vigorous;have a youthful spirit; lively; sappy; spirited
? 孫叔叔點點頭，看看站在面前的這支～的小隊伍，滿意地笑了，……(石文駒《戰(zhàn)地紅櫻》116)Sun nodded and smiled with satisfaction at the spirited line-up.
朝氣蓬勃
be bursting with youthful spirit;brim over with vigor and vitality;imbued with vitality
朝氣蓬勃zhāo qì pēnɡ bó
朝氣：新生向上、努力進取的氣象；蓬勃：旺盛的樣子。形容生氣勃勃，充滿活力。full of vigour and vitality, full of youthful spirit, bubble over with life