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TOEFL IELTS BNC: 4527 COCA: 3414
stem
noun [C] /stem/
singularstem
pluralstems
  1. 1
    the long thin central part of a plant from which the leaves and flowers grow (植物的)莖,柄,梗

    Cut the stems to ground level in winter. 冬天的時候把莖剪到齊地面高。

     Synonyms and related words
    Parts of plants: aerial root, anther, beanstalk...
  2. 2
    the long thin part of a wine glass that joins the bowl to the base (高腳酒杯的)柄腳
     Synonyms and related words
    Types of cup or glass: beaker, chalice, cup...
  3. 3
    the long narrow part of a pipe used for smoking 煙鬥柄
     Synonyms and related words
  4. 4
    linguistics the part of a word that does not change when an ending is added, for example ‘work' in the word ‘working' 詞幹
     Synonyms and related words
stem
verb [T] /stem/
present tense
I/you/we/theystem
he/she/itstems
present participlestemming
past tensestemmed
past participlestemmed
  1. to stop something from spreading or increasing, especially something bad 阻遏,制止(尤指壞事)

    These policies have helped to stem population loss. 這些政策已起到了阻遏人口流失的作用。

    stem the flow/tide/flood (of) :

    Police are attempting to stem the rising tide of rural crime. 警方正試圖遏制農村地區犯罪率上升的趨勢。

     Synonyms and related words
    1. a.
      formal to stop liquid from flowing 止住,阻止(液體流動)

      Joan breathed in deeply, trying to stem her tears. 瓊深吸了一口氣,想忍住不讓淚水流下來。

       Synonyms and related words

phrasal verbs

STEM
noun [U] education /stem/
  1. science, technology, engineering and maths: the sciences as educational subjects

    Studying STEM subjects leads directly to a huge variety of exciting and rewarding career opportunities.

     Synonyms and related words
    Scientific areas of study:aerodynamics, aeronautics, anatomy...

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