舌: tongue sth. shaped like a to ...的: 4次方是 The fourth power of 2 i ...发生: happen; occur; take place; a ...叶舌的发育: ligula development爆炸的发生: injection of detonation病的发生: nosogenesis; nosogeny齿的发生: dental development耳的发生: development of the ear骨的发生: osteogenesis火焰的发生: initiation of flame脊髓的发生: development of spinal cord脑的发生: development of brain丘陵的发生: origin of hills热的发生: calorification鳃器的发生: development of the branchial apparatus山脉的发生: origin of mountains思维的发生: origin of thinking私权的发生: growth of private right四肢的发生: development of the limbs心理的发生: origin of mind心脏的发生: development of the heart血点的发生: bloodspotting牙的发生: development of the teeth眼的发生: development of the eye痈肿的发生: appearance of carbuncle