The playpen includes an enveloping part and a foldable bedstead. The enveloping part covers around the foldable bedstead.

该婴儿床包括一收合式床架主体以及一装设于该收合式床架主体的包覆件。

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Meanwhile, the price of the playpen, particularly for particle physics, is still going up.

ECONOMIST: The truth is out there. Maybe

Four centuries of Portuguese influence have thus produced more than a playpen for the debauchees who arrive on the jetfoils from Hong Kong.

CNN: ASIANOW - TIME Asia | Visions of China: Macau

What's more, on average, 26 babies under age 2 are injured every day in a crib, bassinet or playpen in the U.S., according to a study in the journal Pediatrics last month.

WSJ: When a Cuddly Crib Puts the Baby in Danger