I can't help thinking he knows more than he has told us.
我总觉得他没把他知道的事全告诉我们。
The principal knows all the students by name.
校长能叫出所有学生的姓名。
Everyone knows what's best for him or herself.
人人都知道对自己来说什么是最好的.。
She knows every student in the school.
她认识学校里的每一个学生。