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空气调节器，风流调节装置，调节风流的风窗
1. The market's weak demand for Air China shares somehow exposed flaws in the current IPO pricing rules set by the securities regulator.
2. China's air regulator banned Chinese airlines from complying with the EU scheme this month.
3. A preliminary investigation by Australia's air safety regulator found that the weight was entered incorrectly into the onboard computer.
4. Recent air crashes in Greece and Venezuela have prompted China's aviation regulator to urge increased safety.