Usages of tóukuī
这 是 我 的 头盔。zhè shì wǒ de tóukuī.
This is my helmet.
请 带 头盔 和 手套。qǐng dài tóukuī hé shǒutào.
Please bring a helmet and gloves.
我 之所以 戴 头盔， 是 因为 路况 不 好。wǒ zhīsuǒyǐ dài tóukuī, shì yīnwèi lùkuàng bù hǎo.
The reason I am wearing a helmet is that the road conditions are poor.
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