A dense column of smoke rose several miles into the air.
一柱浓烟升上几英里高的天空。
The explosion sent a column of smoke thousands of feet into the air.
爆炸造成的烟柱升入几千英尺的高空。
The air pressure is determined by the height of mercury column.
利用水银柱的高度来量度气压。
The air pressure is determined by the height of mercury column.
利用水银柱的高度来量度气压。
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