In general, crabs gills to breathe, gill side at the bottom of the carapace of the gill cavity, but really the land crab gill cavity to expand, shape also changes, such as lung function.是什么意思_In general, crabs gills to breathe, gill side at the bottom of the carapace of the gill cavity, but really the land crab gill cavity to expand, shape also changes, such as lung function.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句