BA and AA are seeking anti-trust immunity because it will enable them to squeeze existing Heathrow-US competitors offkey routes.
英航和美航追求反托拉斯豁免，因为这样的话它们就能够排挤掉从希斯罗到美国主要航线上的竞争对手。
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But when they are offkey or sing at the wrong pitch, the device will exaggerate their mistake so that they can hear it in a pair of earphones they are wearing.