1. She couldn't help blenching when she saw the spider crawling towards her.
她看到蜘蛛朝她爬来时忍不住瞪大了眼睛。

2. The sudden loud noise caused him to blench in fear.
突然的巨大声响让他不禁面露惊恐之色。

3. Her heart blenched with sadness as she read the heartbreaking news.
当她读到令人心碎的消息时，内心充满了悲伤。

4. The sight of blood made him blench and feel nauseous.
看到鲜血让他感到恶心，脸色变得苍白。

5. The teacher's harsh words caused the student to blench in embarrassment.
老师严厉的批评让学生感到尴尬，不禁脸色发白。

6. The thought of having to speak in front of a large crowd made her blench with anxiety.
想到要在众人面前演讲让她感到焦虑，脸上露出惊恐之色。