我不想冒险做手术。

Wǒ bù xiǎng màoxiǎn zuò shǒushù.

I don't want to risk doing a surgery.

我不喜欢冒险。

Wǒ bù xǐhuān màoxiǎn.

I don't like to take risks.

他喜欢冒险旅行，探索未知的地方。

Tā xǐhuan màoxiǎn lǚxíng, tànsuǒ wèizhī de dìfāng.

He enjoys adventurous travel and exploring unknown places.