I’m not afraid to step up and take the big shots.
元素可以分为具有相似性质的组。
The interest of the behaviorist in man's doings is more than the interest of the spectator—he wants to control man's reactions as physical scientists want to control and manipulate other natural phenomena.
我们必须记住,我们并不是这个星球上唯一重要的物种。
A book should be an experience, not just something you read.