短語(yǔ)詞組短語(yǔ)bilateral l symmetry 兩麪對(duì)稱(chēng);左右對(duì)稱(chēng)bilateral plane of symmetry 兩側(cè)對(duì)稱(chēng)平麪spinosum bilateral symmetry 兩側(cè)對(duì)稱(chēng) 返回 bilateral symmetry