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The charges of unfair competition from the likes of Lufthansa, Air France-KLM and Air Canada fail to stack up.

来自汉莎航空，法国KLM航空以及加拿大航空的指责并未产生过多影响。

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The air then moves up though the space via the stack effect and is allowed to circulate above interior walls and out through an operable exhaust vent.

然后，空气通过堆栈效应移动，并且可以通过一个排气孔在室内墙壁和外部循环运行。

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Coal ash is captured before it can escape at a smoke stack into the air, it's channeled into ponds near the river and contained there by earthen dikes.

NPR: In Tenn. Town, A Muddy Christmas For Some

El Mogote has an air of increasing permanence: a stack of new wood for building blocks the mud track entering the settlement.

ECONOMIST: Honduras

The blue-faced man lowered the piece of paper in his right hand onto the left-hand stack, transferred it instantly to the right-hand stack, then lifted it once again into the air.

NEWYORKER: Ziggurat