- eat heartily;
"The food was placed on the table and the children pitched in"
- After the christmas dinner, we all pitch in to clean up the house.
- An electromagnetic wave of audio frequency produced by atmospheric disturbances such as lightning, having a characteristically decreasing frequency responsible for a whistling sound of descending pitch in detection equipment.
- The fans rushed onto the pitch in an excited mob.
- pitch in协力
- dig in把 ... 埋在土里...