New Words：

lawn [lɔːn] n. 草坪;草地

Sample Sentences：

The children are not allowed to play on this lawn.
In summer we have to mow the lawn twice a week.
They were sitting on the lawn under a large apple tree.

mow [məʊ] v. 修剪;割
allow [əˈlaʊ] v. 允许；准许

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