The evening party ends with a hot air balloon competition.

晚会最后以放热气球比赛来结束。

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Some of the carbon therefore ends up as soot, rather than carbon dioxide, and oxygen that should be combining with carbon combines with nitrogen from the air instead.

其中的一些碳最终以烟雾而非二氧化碳的形式排放出来，而那些本该与碳结合的氧分子则转而与空气中的氮结合。

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Warm air is less dense than cooler air so it ends up layered on top of the downward moving cooler air.

热空气比冷空气密度小，因此热空气总在冷空气上方。

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The Paris Air Show ends Sunday which still gives Boeing time to catch up to rival Airbus in securing new aircraft orders.

VOA: standard.2009.06.16

He points, however, to some areas of uncertainty, such as the exact amount of mercury sent from smokestacks into the air that actually ends up in humans.

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This isn't the same model, surely, but it does bear a striking similarity in both design and materials -- and after lots of deliberation and comparisons, we're fairly sure this isn't the Air either (the hinge ends in a totally different spot in relation to the keys).

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The parts included "brakes, brake pads, brake shoes, ignition coils, water pumps, window regulators, suspension sway bar links, wheel hubs, anti-lock braking sensors, control arm bushings, transmission filters, pitman arms, tie rod ends, and suspension air springs, " the papers add.

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