点击下方单词,选择对的这个单词
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1. the floor of a building that is at or nearest to the level of the ground around the building
Synonym: first floorground level
2. becoming part of a venture at the beginning (regarded as position of advantage)
e.g. he got in on the ground floor
多通过句子记忆单词，而不是单独死记硬背。
