Now she had quite a swollen head but she was behaving normally when she was tiny.

现在她的头肿得很厉害，但她很小的时候表现得很正常。

He must once have been bitten by a snake, for he disappeared for two days, and came in with his head swollen to twice its size, and very wobbly on his legs.

他一定是被蛇咬过，因为他消失了两天，回来的时候脑袋肿成了原来的两倍大，腿也摇摇晃晃的。