Steam condenses to water when it touches a cold surface.

水蒸气触及冷的表面即凝结成水.

《现代汉英综合大词典》

Steam is condensed to water when it touches a cold surface.

水蒸汽触及冷的表面即凝结成水.

《现代英汉综合大词典》

Steam condenses / is condensed into water when it touches a cold surface.

蒸气接触冷的表面而凝结成水珠.

辞典例句

When steam touches a cold surface, it condenses and becomes water again.

水蒸气接触到冷的物体表面时, 凝结(condense)又变成水.

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Steam condenses into water when it touches a cold surface.

蒸气接触冷的表面就凝成水珠.

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Steam is condensed into water when it touches a cold surface.

蒸气接触冷的表面时,即凝结为水.

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