on a wing and a prayer

with only the slightest chance of success

成功机会微乎其微

on wings

used suggest happiness by reference to the light movement or feeling of flying

飞一般地；飘飘然；轻松愉快地

‘I'm on wings,’ she admitted. ‘It's wonderful seeing the palace brightened up.’.

“我觉得飘飘然，”她承认道。“看到整个王宫都活跃起来真是太棒了”。

spread (或 stretch 或 try) one's wings

extend one's activities and interests or start new ones

扩展某人的活动和利益；重新开始

under one's wing

in or into one's protective care

在某人的卵翼之下，在某人的庇护之下

in the wings

In the stage wings, unseen by the audience.

在观众看不到的舞台两侧

Close by in the background; available at short notice

在近旁，在眼前：在背景上相近；简短公告中会有

a presidential candidate waiting in the wings.

总统候选人等待着即将当选的希望的消息

on the wing

In flight; flying.

在飞行中；飞着

take wing

To fly off; soar away.

起飞；飞离

under (one's) wing

Under one's protection; in one's care.

在…庇护下；在某人照顾之下

wing it【非正式用语】

To say or do something without preparation, forethought, or sufficient information or experience; improvise

即兴表演，即兴演讲：在未准备、未预先考虑或没有足够的信息和经验的情况下说或做某事；即兴创作

She hadn't studied for the exam, so she decided to wing it.

她没有为考试准备，所以决定临场发挥