float on air

• 洋洋得意；觉得飘飘然

float on air的用法和样例：

例句

1. He walked on air for getting a high mark.
   他因得了高分而洋洋得意。
2. Anatole with his swaggering air came up to the window.
   阿纳托利现出洋洋得意的神气，向窗前走去。