An elephant is a quadruped.大象是四足动物.Ventral ( or pelvic ) fins correspond to the hind limbs of a quadruped.腹鳍 对应着四足动物的后肢.The corresponding part of the forefoot of a quadruped.'掌骨'.''四足动物前脚所对应的部分....
A person's arms homologize with a quadruped's forelimbs.人的胳膊与四肢动物的前肢相应.Ventral ( or pelvic ) fins correspond to the hind limbs of a quadruped.腹鳍 对应着四足动物的后肢.An elephant is a quadruped.大象是四足动物.a quadruped mammal....
士兵们向敌国的首都进军.The soldiers marched towards the capital of the enemy country.他们向敌人的要塞进军.They marched on the enemy's fortress.他们夜里进军.They marched by night....