a nod and a wink的用法和样例：
- Everything could be done by a nod and a wink.
- Her eyes kept straying to the clock and, a nod being as good as a wink to a blind horse, I said I had an appointment to meet a friend, and left.
- Acknowledge11 your introducer with a nod and a thankyou.
- A wink is as good as a nod to a blind horse.