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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)茎,柄,梗

    Cut the stems to ground level in winter. 冬天的时候把茎剪到齐地面高。

     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 (高脚酒杯的)柄脚
     Synonyms and related words
    Types of cup or glass: beaker, chalice, cup...
  3. 3
    the long narrow part of a pipe used for smoking 烟斗柄
     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' 词干
     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(尤指坏事)

    These policies have helped to stem population loss. 这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. 警方正试图遏制农村地区犯罪率上升的趋势。

     Synonyms and related words
    1. a.
      formal to stop liquid from flowing 止住,阻止(液体流动)

      Joan breathed in deeply, trying to stem her tears. 琼深吸了一口气,想忍住不让泪水流下来。

       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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