The Tianwen-1 Probe landed on Mars on May 15th, 2021.

天问一号探测器在2021年5月15日登陆火星。

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China's first Mars rover, Zhurong, reached Mars successfully on May 15th, 2021.

2021年5月15日，中国首架火星探测器“祝融号”成功登陆火星。

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I'm reading an article about Tianwen 1, which successfully landed on Mars on May 15th.

我在读一篇关于天问一号的文章，它在5月15日成功登陆火星。

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What Giuliani needed, perhaps, was a fight, and on May 15th he got one.

NEWYORKER: Mayberry Man

The two adversaries are to meet for the first time in Belgrade on May 15th.

ECONOMIST: Kosovo

On May 15th, Mr Arafat answered him by unleashing a few constraints of his own.

ECONOMIST: Israel and the Palestinians