Usage priority
Collins 词频等级为 1，建议结合例句记忆，而不是只背中文释义。
先理解核心含义，再看它在真实句子里的用法。
a moving crowd
a swarm of insects obscured the light
正在加载中文释义…
a moving crowd
正在加载中文释义…
a group of many things in the air or on the ground
clouds of blossoms
it discharged a cloud of spores
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Collins 词频等级为 1，建议结合例句记忆，而不是只背中文释义。
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT.