He sat listening to the tick of the grandfather clock.他坐在那儿，听着落地式大摆钟嘀嗒作响。My great-grandfather was a person of some importance here.我曾祖父曾是这儿的头面人物。My great-grandfather made horseshoes and nails and what have you.我曾祖父打制马掌、铁...
Leukemias typically fill up the marrow with abnormal cells, displacing normal hematopoiesis.典型的白血病有很多不正常的细胞充满骨髓, 取代正常的造血功能.It replaces the polluted air by successively displacing it by fresh air.它用新风成功有效地替换了污浊的空气.Women p...