英语词汇“tool subject”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	tool subject
释义	WordReference Random House Unabridged Dictionary of American English © 2024 tool′ sub′ject, [Educ.] a subject that, when mastered, equips students with a skill useful in studying other subjects:Grammar is a tool subject for English composition. 1920–25
随便看	protomorphic proton protonema protonemal protonic proton number protonotary protonotaryship proton-proton chain proton synchrotron proto-oncogene protopathic protopectin protophloem protoplanet protoplasm protoplasmic protoplast protoplastic protopodite protopope protopresbyter protostar protostele protostome

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