India is one part of the world I would go to at the drop of a hat.

印度是世界上我即刻就想去的一个地方。

The company can't expect me to move my home and family at the drop of a hat.

公司不可能指望我立即搬家。

I love to travel, I'm ready to go at the drop of a hat.

我喜欢旅游，我准备马上就去。

Call Tom, he can come at the drop of a hat.

给汤姆打电话吧，他召之即来。

They say teenagers laugh at the drop of a hat.

他们说十几岁的少年们随性的欢笑。