clamming

例句：

1. 1. The cow was clacking its teeth in the barn.
   奶牛在牛棚里咯咯叫。
2. 2. The cows were mooing loudly as they graze.
   奶牛们大声哞哞叫着吃草。
3. 3. The farmer used a special machine to clap the milk into containers.
   农民用一种特殊的机器把牛奶挤入容器中。