stirrer with four tilted blades

例句：

1. 1.The chef uses a stirrer to mix the ingredients before cooking.
   厨师使用搅拌器在烹饪前混合食材。
2. 2. The scientist used a stirrer to create a fine mist for testing.
   科学家使用搅拌器制造细雾进行测试。
3. 3. The engineer designed a stirrer to increase the mixing efficiency of the liquid.
   工程师设计了一个搅拌器来提高液体的混合效率。