China named its first Mars exploration mission Tianwen 1 on April 24, 2020, China's fifth Space Day.

2020年4月24日是中国第五个“航天日”，中国将其首次火星探测任务命名为“天问一号”。

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This is the fifth space walk they had to do on this mission.

这已经是他们为完成此项任务所做的第五次太空行走。

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Fully one fifth of Manhattan is yard space, according to a new study from the City University of new York, and that doesn't include parks and cemeteries.

充分发挥个人思想的曼哈顿第五院子的空间，据来自纽约城市大学的新研究，并且不包括公园和墓地。

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Tomorrow Uniqlo will open a much-anticipated store in the biggest space on Fifth Avenue.

FORBES: Uniqlo Does New York: Inside The Biggest Store On Fifth Avenue

Mr. Carpenter, who was appointed curator of Japanese art in July 2011, devotes about a fifth of the permanent exhibition space to ancient artifacts and Buddhist art and uses the remaining galleries to stage six-month-long installations, each illustrating an aspect of Japanese art.

WSJ: Flights of Feathered Fancy | Birds in the Art of Japan | Metropolitan Museum of Art | By Lee Lawrence

It features luxury retailers at the street level, a glass box housing a clothing store on the fifth floor and a soaring space with stunning views on the seventh floor that can be rented for events all connected by an internal staircase that spirals up like a DNA helix.

WSJ: A Sleek, Chic Hangout ... the Parking Garage