【医】 地下水学说, 佩滕科弗氏学说(病菌通过地下水传播疾病)

ground-glass hepatocyte

ground work

whistle-pig [=Woodchunk; ground hog]

neutral ground

ground crew

matrix (Sharp 1929); ground substance

break ground for new construction;start a construction project

ground-to-ground missile【军】 航;surface-to-surface missile【军】 航