Indeed, getting the zinnia flowers to bloom proved challenging for ISS astronaut Scott Kelly.

实际上，培育百日菊属植物开花对空间站宇航员ScottKelly来说极富挑战。

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Indeed, getting the zinnia flowers to bloom proved challenging for ISS astronaut Scott Kelly.

实际上，培育百日菊属植物开花对空间站宇航员ScottKelly来说极富挑战。

youdao