硒和铝在生物中含量其微.Selenium and aluminum are found in vanishingly small concentrations within living things.除了硒和汽相沉积的锗和硅之外, 玻璃至少是二原子的.Apart from selenium and vapour - deposited germanium and silicon, glasses are at least diatom...
Christopher Columbus set sail for the New World in the Santa Maria.克里斯托弗·哥伦布从圣玛丽亚启航前往新大陆。Building a memorial to Columbus has been his lifelong dream.为哥伦布建一座纪念碑是他一生的梦想。the quincentenary of Columbus's voyage to Americ...