It now answers the purpose of a sumptuous lodge for the doorkeeper of the straits of the Sound, before which every year there pass fifteen thousand ships of all nations.

现在，它满足了为海峡海峡的看门人提供豪华住所的目的，每年都有来自各国的一万五千艘船只经过该海峡。

I could not afford to buy an equatorial, and I have been obliged to rig up an apparatus of my own devising, so as to make it in some measure answer the purpose of an equatorial.

我买不起赤道仪， 我不得不组装自己设计的仪器， 以使其在某种程度上满足赤道仪的用途。

An aneroid barometer, to indicate extreme pressures of the atmosphere. An ordinary barometer would not have answered the purpose, as the pressure would increase during our descent to a point which the mercurial barometer [1] would not register.

2. 无液气压计，用于指示大气的极端压力。普通气压计无法满足该目的，因为在我们下降过程中压力会增加到水银气压计 [1] 无法记录的点。