重点词汇
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字母
letter; character; lettering; grapheme; alphabetical; alphabetic
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对称
symmetrical; symmetry
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哪些
which; which ones; what; who
中英释义:
What are the letter symmetries
字母
letter; character; lettering; grapheme; alphabetical; alphabetic
对称
symmetrical; symmetry
哪些
which; which ones; what; who