在强制热风和冷风系统中，通风管道将热空气的冷空气输送到家里不同的地方。

In forced-air heating and cooling systems, ducts carry hot or cold air to different parts of home.

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在强制热风和冷风系统中，通风管道将热空气的冷空气输送到家里不同的地方。

In forced-air heating and cooling systems, ducts carry hot or cold air to different parts of home.

youdao