愉快
happy;joyful;cheerful;pleased;delighted
祝你在中國逗留期間過得～。I hope you’ll have a pleasant stay in China./見到你很～。I am delighted to see (or meet)you.or:Happy to meet you./和老朋友在一起相聚，感到很～。I’m delighted to be with our old friends (or to be in the midst of our old friends)./祝你旅途～。I wish you bon voyage (or a pleasant journey or trip)./過得～enjoy oneself,have a good time/心情～ be in a cheerful frame of mind/在此～時刻on this joyful (or happy)occasion/～地接受邀請accept an invitation with pleasure/～的微笑a happy smile