研碎

例句：

1. 1. The scientistwas researching the effects of caffeine onsleep patterns.
   科学家正在研究咖啡因对睡眠模式的影响。
2. 2. The chef carefully crushed the garlicbefore adding it to the sauce.
   厨师在加入酱汁之前仔细碾碎了大蒜。
3. 3. Therock was so hard that it could notbe easily crushed by hand.
   这块石头太硬了，无法用手轻易碾碎。