定義：the hollow hand or palm (so of the paw of an animal, of the sole, and even of the bowl of a dish or sling, the handle of a bolt, the leaves of a palm-tree); figuratively, power
定義：a channel, e.g., a fosse, canal, shaft; specifically the Nile, as the one river of Egypt, including its collateral trenches; also the Tigris, as the main river of Assyria
