Because you are not taking a wrap over the noseband, be aware that with this method, the chain can slip down the horse's nose.

因为你没有用鼻革包裹链子，所以在使用这种方法的时候要注意链子有可能会从马的鼻子上滑落。

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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。

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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。

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