stem for stem

例句：

1. 1. The tree's stem is covered in green leaves.
   这棵树的茎上长满了绿色的叶子。
2. 2. The stem of the flower is a beautiful shade of purple.
   花的茎是美丽的紫色。
3. 3. The stem of the plant is very strong and can support the weight of many leaves.
   植物的茎非常强壮，可以支撑许多叶子的重量。