天地

例句：

1. 1. The sky is vast and blue, with clouds drifting lazilyacross it.
   天空广阔而蔚蓝，云朵悠闲地飘过。
2. 2. The earthis our home, and we must takecare of it.
   地球是我们的家园，我们必须好好照顾它。
3. 3. The universe is full ofwonders that we can only imagine.
   宇宙充满了我们只能想象的奇迹。