4周搞定2000+托福核心词
required
常考释义
The farming economy would almost certainly have required much larger communities to do all the work needed to plant and tend sufficient crops to sustain them through the year.
农业经济几乎肯定会需要更大的社区来做所有的工作，并有足够的作物来支撑他们度过一年。
来源于：剑雅6-Test3adj. 强制的；规定的
What qualifications are required?
都有哪些强制性条件？
adj. 必要的；必需的
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