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Butterflies welcomed two new students and one visitor to the Butterfly class today.
本周我们蝴蝶班迎来了两位新同学和一位试听的同学。
youdao
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Butterfly Mechanism consists of two congruent equilateral triangles.
蝶形单元是由两个全等的三角形组成。
youdao
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Butterfly Mechanism consists of two congruent equilateral triangles.
蝶形单元是由两个全等的三角形组成。
youdao