When we boil water, it turns into steam.
我们烧水的时候，水变成水蒸汽。
When water boil, it turns into steam.
水沸腾而变成蒸汽。
When water boils it turns into steam.
水沸腾而变成蒸汽。
When water is heated it turns into steam.
水被加热后会变成蒸汽。
When the HTP comes into contact with a catalyst contained within the rocket, it turns into steam and oxygen.
当HTP接触到火箭发动机内的催化剂时，就转变成气体和氧气。
As the water turns into steam, it extracts latent heat from the fire and cools the smoke-thereby preventing the fire from jumping to a new location.
水变成水蒸汽时不但能够带走了火中的隐伏热量，而且还能降低烟的温度，从而阻止火灾的蔓延。
If you heat the water more, it boils and turns into steam.
如果你继续给水加热，它会沸腾并转化成蒸汽。
When rainwater seeps into cracks in the mountain, the magma turns it into steam and forces it out again.
当雨水渗入爆发的火山，岩浆转变成蒸汽和有力的岩浆喷出去。
When we boil water, it turns into gas and we call it steam.
当我们煮水时，它会变为气体，我们称它为水蒸气。
When steam cools, it turns into water.
当蒸汽冷却时，它会变成水。
When steam cools, it turns into water.
当蒸汽冷却时，它会变成水。
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