凸镜成像原理:连词成句before any there here buildings were tall

来源：百度文库 编辑：中科新闻网 时间：2024/05/16 11:28:39

were there any tall buildings here before
这儿以前有高楼吗

There were tall buildings here before.
这里曾经有高楼。

之前任何地方高耸建筑物都很高！

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