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Choosing Mnemonics
Pick the mnemonic story that sticks best for you by clicking its ☆ — there's no wrong choice, and you'll be able to write your own soon. Then press Continue.
外源
Characters and words in 外源
outside / in addition / foreign / external
root / source / origin
Words with 外源
Sentences with 外源
外源 currently does not appear in any sentence.
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