詞根的英語是stem。
stem的復數形式是stems，第三人稱單數形式是stems，過去式形式是stemmed，過去分詞形式是stemmed，現在分詞形式是stemming。相關短語有stem cell幹細胞，sappy stem多汁莖，aerial stem氣生莖，fertile stem能育莖。可造句子如下：
1、Twist the string carefully around the second stem with the other hand.
用另外壹只手小心地把細繩纏繞到第二根莖上。
2、Cut them off cleanly through the stem just below the node.
就從莖節下面，沿莖幹把它們全砍掉。
3、The stinging nettle has a square stem and little hairs.
蕁麻長有四方莖和細小茸毛。
4、He chewed the stem of his pipe and eyed her sceptically.
他嘴裏銜著煙鬥柄，滿腹狐疑地打量著她。