感谢 thank; be grateful 表示衷心的感谢 express heartfelt thanks; 我们特别感谢他的及时帮助。 we are particularly grateful to him for his timely help. 我真不知道该怎样感谢你才好。 i don't know how i can possibly thank you enough.; 感谢信 letter of thanks
预先 in advance; beforehand 预先打好行李 be beforehand with one's packing; 预先感谢 thank sb. in anticipation; 预先警告 forewarn; 预先声明 state explicitly beforehand; 预先通知 notify in advance; 她总是预先付房租。 she is always beforehand with the rent. 一切都已预先安排妥当。 everything has been fixed in advance