To start the flow of oxygen, pull the mask towards you. Place the mask over your nose and mouth, slip the elastic strap over your head, tighten it by pulling the end of the strap.

氧气面罩落下后，请用力向下拉，罩在口鼻处，将带子套在头上，可通过带子调节松紧。

youdao

Strap on a mask and fins, and share the sea with schools of trumpet fish, black and white sergeant fish, small sharks and, of course, green turtles.

BBC: The perfect trip: Singapore and Malaysia

Advancements in technology and thinking have allowed members of Riddell to make improvements to its football helmets, which include web sling suspension, a chin strap, and the face mask.

FORBES: Why Football Helmet Manufacturer Riddell Should Be Very Concerned About Concussion Litigation