夏日的一天，一只蚱蜢正在一块庄稼地上蹦来跳去，无忧无虑地唱着歌。
In a field one summer's day a Grasshopper was hopping about, chirping and singing to its heart's content.
无忧无虑的年轻人唱着歌步行穿过树林。
Lighthearted youngsters were singing as they hiked through the woods.
无忧无虑的年轻人唱着歌步行穿过树林。
Lighthearted youngsters were singing as they hiked through the woods.
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