Each hole leads to a small tube that runs to your nose.

每个洞都通向一根小管子，这条管子通向你的鼻子。

youdao

You only need a very small blob of glue, so one tube lasts for ages.

你仅需要很小一滴胶水，所以一管胶水能用很久。

《柯林斯英汉双解大词典》

Carry a small tube of sunscreen or a one-use, wipe sunscreen in your pocket, so that you can reapply it to your face, neck and arms as you run.

在口袋里放一小罐或者是一次性的防晒霜，这样你中途还能给你的暴露部位再抹一次。

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During this exam, a flexible tube containing a small transducer about the size of your index finger is guided down your throat.

CNN: Heart murmurs

When the rubber sack makes contact with an object, whether a glass, a pen, or other hard item, a narrow inner tube sucks a small percentage of air out of the sack, making it contract and conform to the shape of the object it touches.

FORBES: Welcome, with a Nod to Robotics

Other instruments can be inserted into the tube or through other small incisions to remove the ectopic tissue and repair the fallopian tube.

CNN: Ectopic pregnancy