Direct-Vent panels provide superior ventilation with every step.

直泄面板的每一步提供了优越的通风。

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The communication device comprises an air vent, and the air vent is provided with the dustproof ventilation device.

所述通信设备包括通风口，在所述通风口处设有上述防尘通风装置。

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The top riser vent with big mesh size has excellent ventilation. It also effectively guard against flies.

上方大网目透气网孔，通透气佳，即可有效预防苍蝇入侵。

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In the meantime, you can improve the ventilation at your seat by turning on the overhead air vent to low and positioning the airflow to be slightly in front of your face.

CNN: Commentary: Flu and your health on a plane