I heard the bird singing in the trees.
我听见鸟儿在树上歌唱。
So the air is very clean and we can hear birds singing in the trees.
因此，空气很干净，我们可以听到鸟儿在树上歌唱。
One day, the weather was really good. Birds were singing in the trees…
中文是这样的：一天，天气很晴朗，小鸟在枝头唱歌，一个男孩写完了作业，就…
One day, the weather was really good. Birds were singing in the trees…
中文是这样的：一天，天气很晴朗，小鸟在枝头唱歌，一个男孩写完了作业，就…
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