骑马有益于头脑。
Sadly for me, the others are now off biking and riding through the canyons. I have to head back to my cave to sleep the day away.
我很伤心，其他人都骑自行车穿越峡谷去了，我只能回到山洞里，用睡觉打发时间。
Because they're so light and have lots of openings for air to pass through, helmets aren't any hotter than having your head exposed to the sun while riding.
头盔轻，而且有很多的散热孔，和把头暴露在阳光下，感觉差不多。不会热。
Because they're so light and have lots of openings for air to pass through, helmets aren't any hotter than having your head exposed to the sun while riding.
头盔轻，而且有很多的散热孔，和把头暴露在阳光下，感觉差不多。不会热。
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