橡果从树上掉下来，在地上滚动。
The ___acorn fell from the tree and rolled on the ground.
孩子们在公园里捡橡果玩。
The kids are picking up ___acorns to play with in the park.
孩子们在公园里收集橡果做手工。
The children collected ___acorns in the park to make crafts.
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