n.[解]鐙骨
The fixation of the stapes may progress rapidly during pregnancy. 在懷孕期鐙骨固定可能迅速發(fā)展。
But the stapes would not take on its familiar role as a component of the terrestrially adapted tympanic ear for millions of years. 不過(guò),還要數(shù)百萬(wàn)年后,鐙骨才會(huì)在適合陸生的鼓膜耳朵中,擔(dān)任我們所熟悉的任務(wù)。