noun 下载 🔗分享 背部, 背面 The back; the dorsal aspect of the thorax in insects. Examples : "The entomologist carefully examined the small, shield-shaped nota on the beetle's thorax under the microscope. " 昆虫学家在显微镜下仔细观察了甲虫胸部那个小小的盾形背板。 biology insect anatomy animal part 与AI对话词汇游戏阅读练习