4周搞定2000+托福核心词
cryptsporidium = crypt(隐藏) + spor(孢子) + id(…的) + ium(名词) = 隐孢子虫
sporadically = spore(种子) + adic(形容词后缀) + al(...的) = 种子四散→零星地
孢子状的→间发性的，断断续续的
sporadic
常考释义
Bartering was a basic trade mechanism for many thousands of years; often sporadic and usually based on notions of reciprocity, it involved the mutual exchange of commodities or objects between individuals or groups.
物物交换是数千年来的基本交易机制；它是偶发的，并且通常是基于互惠这一概念，它包括个体或群体之间相互交换商品或物品的行为。
来源于：阅读OFFICIAL41 P3adj. 不定时发生的
Bartering was a basic trade mechanism for many thousands of years; often sporadic and usually based on notions of reciprocity, it involved the mutual exchange of commodities or objects between individuals or groups.
物物交换是数千年来的基本交易机制；它是偶发的，并且通常是基于互惠这一概念，它包括个体或群体之间相互交换商品或物品的行为。
来源于：阅读OFFICIAL41 P3Bartering was a basic trade mechanism for many thousands of years; often sporadic and usually based on notions of reciprocity, it involved the mutual exchange of commodities or objects between individuals or groups.
物物交换是数千年来的基本交易机制；它是偶发的，并且通常是基于互惠这一概念，它包括个体或群体之间相互交换商品或物品的行为。
来源于：阅读OFFICIAL41 P3adj. 分散的
In this lull before the onset of thousands, sporadic visitors are dotted about, sitting down, enjoying the early summer breeze, and posing for photographs.
成千上万人涌现之前的暂时宁静，分散的游客在点缀着，他们坐下来，享受着初夏的微风和摆姿势照相。
adj. 零星的
For the past couple of hours, I could hear sporadic gunfire amid the growing number of people chanting.
过去的几个小时中，我还能听到零星的枪支走火声音和不断壮大的民众高喊声。
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