He locked his helmet into position with a click.
他喀哒一声把头盔扣好。
A man in a crash helmet was mounting a motorcycle.
一个戴着防撞头盔的男子正骑上一辆摩托车。
He waved back, put down the kickstand, and took off his helmet.
他向后挥挥手，放下撑脚架，并脱掉他的头盔。
Helmet stickers can also be used.
也可以使用安全帽贴纸。
Morpher is a bike helmet made from plastics.
Morpher是一种由塑料制成的自行车头盔。
They made a tiny vest and helmet for her to wear.
他们给她做了一件小背心和头盔。
"I'd never even thought of buying a helmet," she says.
她说：“我从没想过要买头盔。”
People hate to wear a helmet because it's thick and heavy.
人们不喜欢戴头盔，因为它又厚又重。
You have to be careful with your motorcycle and always wear your helmet.
骑摩托车一定要小心，一定要带头盔。
The sergeant of police took off his helmet and wiped his forehead.
警官摘下头盔，擦了擦前额。
A 16-year-old boy's tendency to skateboard without a helmet is very normal.
一个16岁的男孩玩滑板不戴头盔是很正常的。
请戴上安全帽。
是真的，除了头盔。
你不得不戴上头盔。
On a bike you must wear a helmet.
在骑自行车的时候，请你戴上头盔。
你不得不戴上头盔。
Boy: Can you take off my helmet and put it on?
男孩：“你可以脱下我的头盔并自己戴上吗？”
This new helmet manual draws on such examples.
这份新的头盔手册利用了这些实例。
I combined a head and helmet to look nice.
我把头和头盔合在一起，使它好看些。
Be sure to have a helmet on at building sites..
在建筑工地一定要戴上安全帽。
Despite wearing a helmet, Sateni lost consciousness.
尽管当时佩戴着头盔，Sateni依然失去知觉。
Al: Don't forget your puncture outfit and crash helmet.
艾尔：别忘了带爆胎装备和护头盔。
In football, you wear a helmet. In baseball you wear a cap!
打橄榄球，你得戴上一顶头盔，而打棒球，你只需戴一顶帽子就行了。
Oxygen is circulated around the helmet to stop the visor misting.
头盔内有氧气循环流动，除了供氧，还可以防止面罩雾化。
Increased helmet use has had a dramatic impact in South-East Asia.
在东南亚，头盔使用的增多已经起到显著的作用。
Increased helmet use has had a dramatic impact in South-East Asia.
在东南亚，头盔使用的增多已经起到显著的作用。
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