beachhead

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Where the Allies had won the critical battle for air supremacy was not over the beachhead.
在尚未結束的灘頭陣地對決中，盟軍贏得了關鍵的制空權的勝利。
They have moved abroad with “beachhead” offices that serve existing clients who do business around the world.
他們在海外成立“灘頭堡”辦事処服務世界各地做生意的客戶。
A well camouflaged Marine is giving silent instructions to a Marine Corps jungle-trained dog on the front lines of the beachhead in Bougainville, Soloman Islands, on Jan. 13, 1944 during World War II.
1944年1月13日，第二次世界大戰期間，所羅門群島的佈乾維爾島灘頭陣地，一名偽裝得很好的海軍陸戰隊員命令海軍陸戰隊一條在叢林接受過訓練的軍犬“保持安靜”。

They had the half-desperate look of soldiers in a convoy, advancing toward a beachhead.
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In the past couple of years, e-commerce movers and shakers are capturing the beachhead.
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Tassal also sells fish in Japan and is trying to build a beachhead in Hong Kong.
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an area of land near the sea or a river that an attacking army has taken control of and from where it can move forward into enemy country

A beachhead is an area of land next to the sea or a river where an attacking force has taken control and can prepare to advance further inland.