clear all breakpoints

例句：

1. 1.The fog cleared up as the sun rose.
   随着太阳升起，雾气消散了。
2. 2.He cleared his throat and began to speak.
   他清了清嗓子开始说话。
3. 3. Clearly, she was not happy with the decision.
   显然，她对这一决定并不满意。