Assertion: snorkel | /r/CapableOf | prevent user
Facets:
value: from choking in water
type: TRANSITIVE-OBJECT
Source sentences:
text: The present invention relates to a snorkel, and more particularly to a snorkel which can prevent a user from choking in water when a water level ascends, and will not form a vacuum suction force to suck a water-sealing membrane when the water level sinks, so as to eliminate a sense of fear for the user that he or she suddenly feels unable to breathe, thereby improving safety and comfortableness of a diver.