Wearing helmets can help prevent severe head injuries.
戴安全帽有助于预防脑部的重伤。
Look! There are five people on that scooter, and none of them are wearing helmets!
瞧！一辆摩托车上载五个人，而且没有一个人戴安全帽。
The guys from the nail factory were still wearing their helmets.
从钉厂出来的这些家伙仍然戴着头盔。
The guys from the nail factory were still wearing their helmets.
从钉厂出来的这些家伙仍然戴着头盔。
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