单词	air bladder
释义	air bladder noun : a sac containing gas and especially air The float tube was an ingenious device built around an inner tube, featuring a seat and backrest created from an additional air bladder in the nylon shell of the rig. Peter Bodo : such as a : a saclike organ present in most bony fishes which contains gas and especially oxygen and nitrogen and that serves chiefly to control buoyancy and in some primitive fish (such as the lungfish) functions as an accessory respiratory organ Elasmobranchs lack the air bladder that gives other fishes buoyancy, and their skeletons are made of light cartilage instead of bone. Steve Kemper Fish make sounds by clicking their teeth, blowing air, and drumming with special muscles against tuned inflated air bladders. Lewis Thomas called also swim bladder b : a gas- or air-filled vesicle in certain algae and aquatic plants (such as rockweed) that helps keep photosynthetic blades and fronds buoyant At the base of each frond is a small air bladder that buoys the blade up to the surface, where it continues to grow while forming a dense canopy approximately 4 feet deep. Jennifer Winger called also pneumatocyst Illustration of air bladder A air bladder Example Sentences Recent Examples on the Web Blowers then inflate an air bladder to help seal the gap—this can only be done once the roof has stopped moving. Tim Newcomb, Popular Mechanics, 29 Aug. 2022 In 2007, Herbert Nitsch, a 41-year-old Austrian, dove more than 700 feet—assisted by a watersled on the way down and an air bladder to pull him to the surface—to claim a new world record for absolute depth. James Nestor, Outside Online, 25 Jan. 2012 The fish’s thick, spongy, and highly vascular air bladder behaves like a lung to aerate the alligator gar’s blood. National Geographic, 25 Feb. 2020 Species such as snappers and groupers have air bladders, which allow them to make fine-scale adjustments in their buoyancy. Popular Science, 11 Feb. 2020 The paper was made of cloth, sometimes silk and isinglass, which is somewhat see-through and made from fish air bladders. Jonah Estess, The Conversation, 29 Aug. 2019 Pine, for example, is a wind-pollinated tree, so its pollen has special air bladders to keep it aloft on the lightest breeze. Zoë Schlanger, Quartz, 6 June 2019 It's covered in air bladders and floats along the ocean surface, carrying with it small fish and other small marine animals. Jacob Sweet, miamiherald, 3 July 2018 There are mechanics beneath the creature’s foam-latex skin, controlling the eyes, eyelids, jaw and tongue, and air bladders to simulate vascular activity. Darryn King, WSJ, 13 June 2018 See More Word History First Known Use 1675, in the meaning defined above
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