sego

例句：

1. 1. The shepherd watched the sheep carefully while they were grazing in the field.
   牧羊人仔细地看管着他们在田野里吃草的羊。
2. 2. The farmer has a flock of sheep that he tends to every day.
   这位农民养了一群羊，他每天都去照料它们。
3. 3. She was surprised when she saw the shepherd approaching with his flock of sheep.
   她看到牧羊人带着他的羊群走来时感到惊讶。