I would like to express my gratitude to everyone for their hard work.
我要对所有辛勤劳动的人表示感谢。
I wish to express my gratitude to Kathy Davis for her immense practical help.
凯茜·戴维斯实实在在地帮了大忙，我想对她表示感谢。
I can hardly express my gratitude to you for your help.
对于你的帮助，我几乎难以表达我的谢意。
No words can fully express my gratitude.
千言万语也表达不尽我的感激心情。
Words can hardly express our gratitude to you.
我们对你的感激难以用语言表达。