Some examples of word usage: weak
1. She felt weak after running a marathon.
她跑完马拉松后感觉虚弱。
2. The bridge collapsed because of weak infrastructure.
桥梁倒塌是因为基础设施不牢固。
3. He has a weak immune system and often gets sick.
他的免疫系统较弱,经常生病。
4. The team's defense was weak, allowing the opposing team to score easily.
球队的防守很薄弱,让对方轻易得分。
5. She had a weak moment and gave in to temptation.
她一时软弱,屈服于诱惑。
6. The company's stock price is weak due to poor financial performance.
由于财务表现不佳,公司的股价疲软。