(A) falling upon or into (esp. a planet) from an outside source.
| 单词 | θ108394 | 
| 释义 | the world > movement > motion in a certain direction > downward motion > falling > 			[noun]		 > dropping or falling vertically > falling of objects onto a planet (2)		 infall1899 (A) falling upon or into (esp. a planet) from an outside source. Subcategories:— 			that which			(1)		 | 
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