3、Despite the heavy rain and strong wind, the workers used all their strength to build a strong dam to block the river and protect the nearby village from flooding, showing their determination and bravery.
4、The passionate protesters formed a human chain, trying to block the entrance of the factory, in an effort to raise awareness about the harmful effects of pollution on the environment and the health of the local community.
5、The teacher's relentless encouragement and guidance acted as a barrier against self-doubt, empowering the students to believe in their own abilities and achieve their academic goals.
