蓬勃: vigorous, flourishing, full of vitality...
尾气: exhaust (i.e. waste gas from engine), emissions...
一共: altogether...
隐情: sth one wishes to keep secret, ulterior motive, a subject best avoided...
他: he or him, (used for either sex when the sex is unknown or unimportant), (used before sb's name for emphasis), (used as a meaningless mock object), other, another...
