After Jack finished creating a special sandcastle with stairs, towers and walls, he took pictures of it.

杰克砌完了一个有楼梯、塔楼和墙壁的特殊沙堡后，给它拍了照片。

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Jack finished his task two hours ahead of time.

杰克提前两小时完成了任务。

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Jack finished his task two hours ahead of time.

杰克提前两小时完成了任务。

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