New Words：

flush [flʌʃ] v. 冲洗；脸红
flush toilet 抽水马桶；座便器
pipe [paip] n. 管子

Sample Sentences：

Flush clean water through the pipe.
Flush the pipe out with clean water.
They flushed the drugs down the toilet.
The workers are laying pipes under the road.
The first flush toilet was invented in England.

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