Some commentators suspected the bridge's foundations, others an unusual air pattern.

有些人怀疑是桥基的问题，其他人则认为是空气流型的问题。

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This air circulation pattern "compartmentalizes" the air flow into sections, thereby limiting the spread of airborne particles throughout the passenger cabin.

CNN: Commentary: Flu and your health on a plane

During the symposium, Asia-Pacific airlines and civil aviation organizations agreed on a simplified air-traffic pattern to go into effect region-wide late Dec. 31.

CNN: Page 4

In that suit, Nike has accused Yum of infringing its trademarks for the Air Force 1 shoe design, a pattern Nike maintains it has marketed and promoted since 1982.

FORBES: 'Yum!' TM Owner Drops Spat With Nike