grasp the nettle

例句：

1. 1. Shegrasped the opportunity to study abroad withgreat enthusiasm.
   她非常热情地抓住了出国学习的机会。
2. 2. The thief tried to graspthe bag but failed.
   小偷试图抓住袋子，但失败了。
3. 3. The scientist grasped theprinciples of physics and applied themto solve problems.
   科学家掌握了物理学的原理，并应用它们来解决问题。