New Words：

steam [sti:m]
n.蒸汽；水蒸气；水汽
v.蒸发；散发蒸汽；冒水汽；蒸（食物）

Sample Sentences：

The engines are driven by steam.
Steam has fogged the bathroom mirror.
The steam sang as it escaped from the pipe.

The hot tea steamed my glasses.
Steam is the only way my mom used for cooking crab.

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