每日单词：constrain

 

constrain /kənˈstreɪn/

CET6丨IELTS丨TOEFL

 外刊例句 

To speed things up, some firms have started mass-producing vaccines that are still in clinical trials. Companies may have promised 4bn doses, but some of their vaccines may not pass trials and will have to be poured away. Many experts think supply will also be constrained by global shortages of things like vials and syringes.

为了加快生产速度，一些公司已经开始大规模生产仍在临床试验阶段的疫苗。制药公司可能承诺提供40亿剂疫苗，但它们的一些疫苗可能无法通过试验，将不得不被倒掉。许多专家认为，小瓶和注射器等物品的全球性短缺也将限制疫苗的供应。

——《经济学人》

 基本释义 

constrain：To constrain someone or something means to limit their development or force them to behave in a particular way.

v. 限制；束缚；强迫

 追根溯源 

单词constrain里的词根strain来自拉丁语stringere，表示“拉紧”，所以，在英语里包含strain的单词，多与此相关：

strain /streɪn/ n. 拉力；负担

restrain /rɪˈstreɪn/ v. 制止；约束

restraint /rɪˈstreɪnt/ n. 限制；克制

overstrain /əʊvə'streɪn/ v. 过度紧张；工作过度

 影视例句 

在美剧《生活大爆炸》中，Sheldon和Penny聊起了科学话题，其中就用到了constraint这个单词：

Sheldon: And then I was thinking about inventing a new dark matter particle to evade the omega baryon constraints, but that just seems like something anyone could come up with.

Penny: Agreed. You know what's blowing my mind? Somebody thought about putting cheese in this crust.

-那时我在考虑要不要创造一种新的暗物质粒子，避开Ω粒子约束，但那没难度，感觉随便一个人都能想出来。

-同意！你知道什么让我惊讶吗？居然有人想出把芝士塞进披萨边里。