讲解文本：
bite the bullet 咬紧牙关，忍受困难，硬着头皮做某事 I know this is going to be hard, but we have no choice. We'll just have to bite the bullet. 我知道这很难，但我们别无选择，只能咬紧牙关上了。 I just need to bite the bullet and take the exam to graduate. 为了毕业我只能硬着头皮去考试了。
疯狂练习吧！
