推荐回答（2个）
stem
中频词，你记住了吗？
英 [stem]美 [stɛm]
n.（花草的）茎；词干；（高脚酒杯的）脚；烟斗柄
vt.遏制[阻止]（液体的流动等）；阻止；封堵；遏止
复数： stems
过去式： stemmed
过去分词： stemmed
现在分词： stemming
第三人称单数： stems
派生词：stemless stem-like
双语例句:1. Twist the string carefully around the second stem with the other hand. 用另外一只手小心地把细绳缠绕到第二根茎上。
2. Cut them off cleanly through the stem just below the node. 就从茎节下面，沿茎干把它们全砍掉。
3. The stinging nettle has a square stem and little hairs. 荨麻长有四方茎和细小茸毛。
4. He chewed the stem of his pipe and eyed her sceptically.他嘴里衔着烟斗柄，满腹狐疑地打量着她。
-
5. Make a slit in the stem about half an inch long. 在树干上切一道大约半英寸长的口子。
以下是分词性的例句：
1.VERB 起源于;来自;由…造成
动词
【语法信息】：V from n
All my problems stem from drink...
我所有的问题都源于酗酒。
Much of the instability stems from the economic effects of the war.
不稳定局面多半是由战争对经济的影响造成的。
2.VERB
动词
【语法信息】：V n
【语域标签】：FORMAL 正式
Austria has sent three army battalions to its border with Hungary to stem the flow of illegal immigrants...
奥地利已派出 3 个营的兵力去本国和匈牙利交界的边境地区阻止非法移民的流入。
The authorities seem powerless to stem the rising tide of violence...
当局似乎无力阻止愈演愈烈的暴力活动。
He was still conscious, trying to stem the bleeding with his right hand.
他依然清醒，正试图用右手止血。
3.N-COUNT
可数名词
He stooped down, cut the stem for her with his knife and handed her the flower.
他弯下腰，用刀替她将花茎割断，然后将花递给她。
4.N-COUNT
可数名词
5.N-COUNT
可数名词
He chewed the stem of his pipe and eyed her sceptically.
他嘴里衔着烟斗柄，满腹狐疑地打量着她。
6.N-COUNT
可数名词
7.PHRASE
短语
【搭配模式】：usu PHR after v
A South African television report said the ship was ablaze from stem to stern.
南非一则电视新闻报道称，那艘船从头到尾都着了火。
stem [stem]
n.茎，干；词干 vi.(from)起源于 vt.堵住
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