他开始用凿子将砂岩雕刻成一只狗。

He set out to chisel a dog out of sandstone.

《柯林斯英汉双解大词典》

窗子打开了，冷不防一只狗探出头来。

The window opened and a dog's head popped out.

《牛津词典》

某个地方的一只狗突然嗥叫起来，对着月亮狂吠。

Somewhere a dog suddenly howled, baying at the moon.

《柯林斯英汉双解大词典》

Here is a cartoon which actually illustrates a classic experiment by some physiologists who for some reason had a dog's brain opened up and started shocking different parts of the brain.

这是张卡通图画,实际上描绘了一个由生理学家,所做过的经典实验,出于某种原因,他们切开一只狗的大脑,对不同的大脑区域进行电击

耶鲁公开课 - 心理学导论课程节选

I used to have a dog that I would walk in this area a lotwhen he was very young.

我以前有一只狗，它很小的时候，我会经常在这里遛狗。

911事件的影响 - SpeakingMax英语口语达人

And so, he has put this chemistry to use in this robotic arm and they call it Fido, because often dogs are the creatures that have to go out and detect these things, and it's not a great job if you're a dog to be sent out to see whether there was an explosive and discover yes, there was, a little bit too late.

因为通常都是派狗去检查这些东西,这个不是个好工作，如果你是一只狗,被派去检查是否有爆炸物，然后你发现有,那就来不及了,所以用机器手检查化学物质。

麻省理工公开课 - 化学原理课程节选