Grammar Note
“火箭”义是可数名词，复数为 rockets；指“芝麻菜”这种叶菜时通常作不可数名词。
火箭；火箭弹
先理解核心含义，再看它在真实句子里的用法。
火箭；火箭弹
A vehicle or projectile that is propelled by a rocket engine.
The rocket launched into the clear morning sky.
火箭发射入晴朗的晨空。
抛射体
A projectile.
一种叶菜,属于芝麻菜属或芝麻菜种。
A leaf vegetable of species Eruca sativa or Eruca vesicaria.
由火箭发动机自我推进的任何载具
any vehicle self-propelled by a rocket engine
比喻用法
Figurative uses.
Several rockets are waiting on the launch pad.
几枚火箭正在发射台上等待。
We watched the rocket climb until it disappeared among the stars.
我们看着火箭攀升，直到它消失在星空中。
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Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
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“火箭”义是可数名词，复数为 rockets；指“芝麻菜”这种叶菜时通常作不可数名词。
Collins 词频等级为 3，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 DICTIONARY_API_DEV, ECDICT, WIKTIONARY.