v. make strong or stronger
v. gain strength
vt. 加强, 变坚固
vi. 变强, 股票上涨
1. She exercises every day to strengthen her muscles.
她每天锻炼以增强肌肉。
2. The team worked together to strengthen their communication skills.
团队合作提高他们的沟通能力。
3. Reading books can help strengthen your vocabulary.
阅读书籍可以帮助增强你的词汇量。