4周搞定2000+托福核心词
stem
常考释义
The second set of more specific changes that have led to the present concern about the distribution of health-care resources stems from the dramatic rise in health costs in most OECD;countries,accompanied by large-scale demographic and social changes which have meant, to take one example, that elderly people are now major (and relatively veryexpensive) consumers of health-care resources.
第二组更具体的变化导致当前对卫生保健资源分配的担忧，这些变化源于大多数经合组织国家健康成本的急剧上升，伴随着大规模的人口和社会变化，这意味着，举一个例子，老年人现在是保健资源的主要消费者（并且相对非常昂贵）。
来源于：剑雅4-Test4v. 起源于
Many of the world’s threats stem from lack of opportunity which, in turn, leads to poverty, social erosion, and political instability.
世界上许多威胁的根源来自机会的缺乏，而机会缺乏进而导致贫困、社会解体及政治动荡。
Their aggressiveness stemmed from fear.
他们的攻击性源于恐惧。
This belief stemmed from early exposure to sad British pop music.
这个想法来自于早期接触的英国流行哀乐。
来自《和莎莫的500天》
图片源自网络
n. 茎
He cut the stem with his knife and handed her the flower.
他用刀割断花茎，把花递给她。
brain stem
脑干
drill stem
钻柱；钻杆；钻具
stem cell
干细胞，骨髓干细胞
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