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Meaning of 通气孔

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tōng kǒng (Trad.: 通氣孔)
an airvent; a louvre; airflow orifice
Example Sentences
1
A part of Air hole.
2
Wow, and it even has ventilation holes.
3
Breather holes are provided at the concave place.
4
Employee got his toe caught in a vent cover.
5
There are two ports in the valve of an engine.