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1·Bulky items out first, in order to avoid the movers can't lift, other pieces of goods can use the other boxes.

体积较大的物品先拿出，以免搬家工人抬不动，其他的零碎物品可以用其他箱子装起来。

2·A drilling technique whereby gases (typically compressed air or nitrogen) are used to cool the drill bit and lift cuttings out of the wellbore, instead of the more conventional use of liquids.

空气钻井是一种钻井工艺，是指利用气体去冷却钻头和把岩屑举升出油井环空，而不是利用更常使用的流体。