“被加热”造句

一块木头被加热到很高的温度.
A piece of wood is heated to a high temperature.

被加热时, 金属便膨胀.
When when heating, the metal thus expands.

被加热和冷冻时,所产生的作用[反应]不一样.
Water behaves in different ways when it is heated and when it is frozen.