You expect the vapor pressure to go down.(可以預計蒸汽壓會下降。)

The crisper keeps water vapor in.(該保鮮儲藏格可以使水汽保留在里面。)

Fluorescent lights use electricity to excite mercury vapor. This produces ultraviolet light that causes a phosphor coating inside the bulb to glow.(熒光燈用電激發水銀蒸氣。這會生成紫外線光而使得鍍在燈管內壁上的磷涂層發光.)

Water vapor accounts for about 4% by volume in moist areas.(在氣候潮濕地區，水汽按體積占(空氣體積)4%左右。)

"Efficient" irrigation is often used to describe systems that result in 85% of the water disappearing in vapor.(“有效”灌溉通常指的都是一些讓85%的水最終以水汽的形式逸散的作法。)

One of these is the subtraction of water from the ocean by means of evaporation—conversion of liquid water to water vapor.(其中之一是通過蒸發的方式，把液態水轉化為水蒸氣——來減少海洋中的水分。)

The pressure will result in the formation of a vapor pocket.(壓力將導致形成一個蒸汽口袋。)

You make not only water vapor, but you make some nitrous oxides, NOX, or nox as it is known, and this is the precursor to smog.(你不僅僅制造水蒸氣，你還會制造一些氮氧化物，NOX，或者如大家所知到的nox，而這是煙霧的前驅體。)

The same structure that permits the one gas to enter the leaf, however, permits another gas—water vapor—to be lost from it.(同樣的結構允許一種氣體進入葉子，然而，也使得另一種氣體——水蒸氣——從葉子中消失。)

Astronomers therefore prefer dry sites with little water vapor, which is generally found at higher altitudes.(因此，天文學家更喜歡水蒸氣很少的干燥地點，而水蒸氣通常出現在海拔較高處。)