v.说，讲，表示（动词say的第三人称单数形式）
There is no truth in what he says. 他说的没有一句实话。
He is a man who I think means what he says. 我认为他是个心口如一的人。
There is not a scrap of truth in what he says. 他说的话没有半点是真的。
He cites as an example the teaching of the laws of motion in physics, which he says are accessible at an early age when a computer is used to assist in the instruction. 他援引教授物理学方面的一些运动定律为例，说明当计算机用于辅助教学时，学生在幼年就能够理解这些定律。
The weather forecast says it will be sunny tomorrow. 天气预报说明天是晴天。
We can't judge a person by what he says but by what he does. [谚]判断一个人，不听言语看行动。
Who says? 谁说的？
生物毒性测试
