ADJ-GRADED 头晕的;眩晕的 If you feel giddy, you feel unsteady and think that you are about to fall over, usually because you are not well.
He felt giddy and light-headed. 他感到头晕目眩。
ADJ-GRADED (高兴或激动得)发狂的,举止反常的 If you feel giddy with delight or excitement, you feel so happy or excited that you find it hard to think or act normally.
Anthony was giddy with self-satisfaction... 安东尼自鸣得意,忘乎所以。
Being there gave me a giddy pleasure. 身处那个地方让我激动得难以自持。