stem
noun [ C ] uk/stem/ us/stem/
(CENTRAL PART)
主干
a central part of something from which other parts can develop or grow, or which forms a support
（植物的）干，茎，梗，柄
the stick-like central part of a plant that grows above the ground and from which leaves and flowers grow, or a smaller thin part that grows from the central part and supports the leaves and flowers
flower stems 花茎
（高脚杯的）柄脚
the thin vertical part of a glass or similar container that joins the part that holds liquid to the flat bottom part on which it stands
Champagne glasses usually have long stems. 香槟酒杯通常有长长的柄脚。
(WORD)
词干
the part of a word that is left after you take off the ending
From the stem "sav-" you get "saves", "saved", "saving", and "saver". 由词干 sav- 可以衍生出 saves，saved，saving 和 saver。
(WATCH)
US (UK winder)（手表的）发条转柄，拨针柄
the small part on the side of a watch that you turn to move the hands (= parts that point to the numbers), or to make the watch operate
(SHIP)
（船）艏，艏柱
the main supporting structure at the front of a ship
Idiom
from stem to sternidiom US 从头至尾
from one end of something to the other
We overhauled the car from stem to stern. 我们把车从头至尾彻底检修了一遍。
stem
verb [ T ] uk/stem/ us/stem/ -mm-
阻挡;阻止;遏制
to stop something unwanted from spreading or increasing
These measures are designed to stem the rise of violent crime. 这些措施旨在遏制暴力犯罪的增加。
We must take action to stem the tide of resignations. 我们必须采取行动制止愈演愈烈的辞职潮。
堵住，止住（出血等）
to stop the flow of a liquid such as blood
She tied a handkerchief around the wound to stem the flow of blood. 她用手帕系住伤口来止血。
Phrasal verb
stem from somethingC1 源自;由…造成
to start or develop as the result of something
Her problems stem from her difficult childhood. 她的问题主要是由艰难的童年生活造成的。
Their disagreement stemmed from a misunderstanding. 他们的分歧源自误会。