现在常见的温度计由一个玻璃管和一个位于底部的贮液槽组成，贮液槽中的水银或酒精沿玻璃管上升形成液柱。
A thermometer often now, and more often back in the early 1800s, consists of a glass tube up which a column of mercury or alcohol can travel from a reservoir at the base.
温度计里的水银柱降到了底端。
也许长远看来气候变化能得到控制，但是在可以预见的将来，温度计里的水银柱还将持续升高，而人类也得尽力和它共存。
Maybe in the long run it will be brought under control. For the foreseeable future, though, the mercury will continue to rise, and the human race must live with the problem as best it can.
那两个温度计里的水银柱的高度一样。
温度计的水银柱骤然下降到零下十二度。
温度计的水银柱骤然下降到零下十二度。
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