kid

The kids are playing happily in the backyard with their dog.

(Chinese) 孩子们正和他们的狗在后院开心地玩耍。

I've known him since we were just little kids in primary school.

(Chinese) 我从我们还是小学的小毛孩时就认识他了。

The farm has several newborn kids jumping around in the field.

(Chinese) 农场里有几只刚出生的小山羊在田野里蹦跳。

Don't be angry; I was only kidding when I said I lost your book.

(Chinese) 别生气；我说把你的书弄丢了只是在开玩笑。

You must be kidding me! There's no way he won the lottery.

(Chinese) 你一定是在逗我！他绝不可能中了彩票。