单语范例（未经PONS编辑处理）
Finally, water vapor pressure may also affect the rate of obsidian hydration.
en.wikipedia.org If a liquid is heated, when the vapor pressure reaches the ambient pressure the liquid will boil.
en.wikipedia.org If the velocities are high enough the pressure may fall to below the local vapor pressure of the water and vapor bubbles will form.
en.wikipedia.org When the total vapor pressure reaches the pressure surrounding the liquid, boiling occurs and liquid turns to gas throughout the bulk of the liquid.
en.wikipedia.org C where the vapor pressure of water is much less than atmospheric pressure, the condensor generally works under vacuum.
en.wikipedia.org