beachheadn.
英 'biːtʃhed | 美 'bitʃhɛd
中文n. [军] 滩头堡，滩头阵地
词根词源
beachhead (n.)1940, in reference to German military tactics in World War II, from beach (n.) + head (n.), on the model of bridgehead, but the image doesn\\'t quite work.
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