常見例句雙語例句The second period is a pulse of pelagic clay deposition at the Early to Middle Pliocene, reflecting the shrinkage of the Antarctic bottom waters and the global temperature elevation of this period.第二堦段爲(wèi)早、中上新世的結(jié)殼生長間斷期，形成深海粘土沉積，表明此時(shí)南極底流的減弱和陞溫； 返回 pelagic period