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Use "depressurise" in a sentence
"It put test subjects in a metabolic chamber (the kind divers use to depressurise) and had them drink three Envigas and eat a set diet during a 24-hour period."
"Free gas recovery would depressurise the reservoir, leading to hydrate melting at the hydrate - free gas interface and thus to free gas replenishment."
"He must check the suit, depressurise the capsule, and open the hatch - which, luckily, was almost full-length."