The crocodile is very dangerous but we can't harm it, because it belongs to the ____(danger) species and is facing up to dying out and needs protection.
生活中一些没什么用的小东西,用我们灵巧的双手,也无法把它变成精美的艺术品。( )
当我们坐在向前行驶的汽车里,会看到汽车以外的景物( )