key to varieties

例句：

1. 1. The key to successlies in hard work and dedication.
   成功的关键在于努力和奉献。
2. 2. Innovation is the keyto economic growth.
   创新是经济增长的关键。
3. 3. Thecompany's survival depends on its abilityto adapt to market changes.
   公司的存续取决于其适应市场变化的能力。