5.3 An insect has an abdomen that is free of appendages except terminal sensory (cerci) and reproductive (ovipositor) structures.是什么意思_5.3 An insect has an abdomen that is free of appendages except terminal sensory (cerci) and reproductive (ovipositor) structures.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句