1ADJ [ADJ n]（乘坐游乐装置）令人兴奋又紧张的 In a fairground, a white-knuckle ride is any large machine that people ride on which is very exciting but also frightening. （乘坐游乐装置）令人兴奋又紧张的
...white-knuckle rides such as the rollercoaster.
类似过山车这样的惊险娱乐项目
2ADJ [ADJ n]（经历等）惊险刺激的 A white-knuckle experience is something that you find very exciting but also very frightening. （经历等）惊险刺激的
...a hellish white-knuckle ride through the heavy London traffic.