打火机被碰撞或跌落到地面上时，油槽直接与其接触，容易破裂和漏气，会对人造成潜在危险。
When the lighter is hit or falls off on the ground, the oil groove is contacted with the ground directly and is easy to break or leak, which is dangerous potentially to people.
这就是为什么当你从船上跳入海里，二级头浸入水中再被拿出水面以后特别容易发生自流漏气的原因。
That's why your regulator so often free-flows as you dip it in and out of the water, when you walk into the sea or plunge off the deck of a dive boat.
普通调节器在过低的温度下容易发生自流漏气。如果试着将调节器一级头埋在冰块里面，你会发现它很可能无法正常工作。
Free flows due to regulator freeze-up are caused primarily when ice forming around the mechanicals of a regulator first-stage disallows it from functioning properly.
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