动词短语
中文翻译：在洞里堆积起来
同义词：
['build up', 'accumulate', 'pile up']
例句：
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1.The team worked tirelessly to build up their strength for the upcoming game.
团队努力不懈地为即将到来的比赛积累力量。
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2.The farmer carefully built up his garden beds with organic compost.
农民小心地用有机堆肥建造他的花园床。
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3. After a long day of work, she decided to build up her energy by having a relaxing massage.
工作了一整天后，她决定通过做一次放松的按摩来恢复体力。