A mmopiptanthus nanus的用法和样例：
- Morphological features and distributiona l rules of mitochondria in relation to cold-hardiness in mesophyll cells in A mmopiptanthus mongolicus are discussed in the paper.
- There is a vein of melancholy in his character.
- There was a long lag in forwarding mail to us.
- A bowl of hot chicken soup is good for you.
- A cloud is a mass of vapor in the sky.