英文英文字典
英文英文字典
古腾堡计划中的在线英语-英语词典
结果
Arthrostraca的结果
Arthrostraca
(n. pl.)
One of the larger divisions of Crustacea, so
called because the thorax and abdomen are both segmented;
Tetradecapoda. It includes the Amphipoda and Isopoda.