三声口哨three whistles

I promised my girlfriend a gold necklace for her birthday， but when the jeweler quoted a price for one we liked， I let out a long， low whistle. And how much are they then? I asked， pointing to another tray.

You， sir， replied the jeweler， about three whistles.

我答应过我的女朋友过生日进送她一条金项链。可是当珠宝商报出我们看中的那条项链的价格时，我低低地打了个长口哨。那这条项链多少钱呢？我指着另一个盘子里的项链问。

先生，对你来说，珠宝商答道，大约值三声口哨。