最后，他深深的敬了一个礼以示谢意，用英语怎么说

At last,he made a salute deeply to express his gratitude.

最后，他深深的敬了一个礼以示谢意……
Finally, he offered a gift deeply in order to show gratitudes ……

In the end, he saluted deeply to show his gratitude.

Finally, he saluted with quite deep emotion for showing his gratitude.

At last, he bowed deeply as to show an appreciation.

In the end, he made a deep bow to express his gratitude.