小孔：指直径较小的孔洞或开口。
小井眼;套管以下的井眼
小孔
One of the first water clocks was a basin with a small hole near the bottom through which the water dripped out.
最早的水钟之一是一个在底部附近有小洞的水盆，水从这个洞里滴出来。
A bowl with a small hole floats in a water tank inside the elephant's body.
一个有小洞的碗浮在大象体内的水箱中。
Make a small hole by using a hammer.
用锤子砸一个小孔。
There is a small hole in the side to drain out extra moisture and keep from drowning the plants.
VOA : special.2011.06.14
The Marines attacked. They broke open a small hole in the door of the brick building.
VOA : special.2009.07.02
The apartment is small. A door is missing under the kitchen sink and there is a hole in the wall near the window.
VOA : standard.2010.02.23
Self-assembly was very useful in eye-of-the-needle problems in cases where you had to get something very large through a very small hole and Leuthardt wondered if it might be helpful in minimally invasive surgery.
Up top, you've got a headphone jack and small mic hole that allows you to, among other things utilize the company's great Read and Record feature for kids' books.
ENGADGET: Nook HD review: a high-def tablet with the heart of a reader
"The moment you start talking about such massive debts people stop being so careful... they realise they're in a deep hole and small amounts of effort won't dig them out again, " he said.