mǎ líng shǔ / de / kuài jīng / hán yǒu / fēng fù / de / diàn fěn / shì / tā / chǔ cún / yǎng fèn / de / zhòng yào / bù wèi马铃薯的块茎含有丰富的淀粉,是它储存养分的重要部位。A potato's stem tuber contains abundant starch and is an important part for storing nutrients.